“We used Oliver for a lot of different things. In general, they do a great job. They have done some electrical and plumbing jobs for us—installed heating system and installed a water heater. I would rate the overall experience with an A. I would extremely likely to recommend them.”

“I thought the customer service was fantastic and the technician was fantastic. They worked on my heater and my cooling, routine service. I would grade the overall experience with an A. I would extremely likely to recommend them.”

“They've done a lot for me. When my heater went down a couple years ago, just before a really bad cold snap, they were the only ones that came. So, they are the best. They come when you need them. They just service the air conditioning. I'd give them an A+ grade overall. I really like them.”

“I've always had a very good experience with Oliver Heating and I would recommend them highly. This last time it was just regular routine work for the A/C and heating. I have a service contract with them. I'd give them an A+ overall.”

“They are very nice and explained everything to me. They put in a new heater, new water heater, electrical work, a lot of work in my house. I would grade the overall experience with an A+. I was very pleased with them. I would highly recommend them, and have recommended them to a lot of people.”

“I like that they're prompt, they come when they said they are coming, they give advanced warning how close they are to arriving, very professional and clean about their work, put their booties on when they come in. They explained everything that they've done and then gave recommendations that I might need. They installed a thermostat and they did an annual checkup on my air conditioning, inside and out. They have done plumbing work, but no electrical. I would grade the overall experience with an A+. I would extremely likely to recommend them.”

“We've been working with them for a long time. And they just do a lot of stuff. We just consider them our plumbers. We have maintenance agreements for the heating and air conditioning, and that's been going on for a long time. We're pleased. They do electrical work. They put in a lot of high hats for us. They changed the boxes outside, inside and updated many of our wall switches. They deserve an A+ grade. They are responsible. They are immediate.”

“I like that they are very friendly, very helpful, no issues. They did duct cleaning for me. I would grade the overall experience with an A+ rating. I would extremely likely to recommend them.”

“They call and then they come and clean my heater. No electrical or plumbing work. I would rate the overall experience with an A+. They are very neat and clean and they come out and do the work. I would extremely likely to recommend them.”

“Everything's fine. I have no problems. They are the ones who installed my entire system. I like their immediate response. They did the duct work and the furnace. They have done electrical and plumbing work in the past. Had problem with circuit breaker and they fixed that. They deserve an A+ for the overall experience. I would highly recommend them, and have recommended them to several people.”

“They have done heating and cooling and electrical work for me. I've been using them for years. I like that they get there when they supposed to and do what they suppose to do. I would grade the overall experience with an A+. I would extremely likely to recommend them.”

“We were preparing to call them for our A/C. They have repaired our central air and plumbing issues. On two occasions, they repaired the heating and air conditioning system; one another occasion, they replaced some parts. I'd give the overall experience an A+. I would extremely likely to recommend them.”

“In our prior house, we had a lot of issues and they took care of them. Air conditioning and heating work was done. They did plumbing work for me too. I would rate the overall experience with an A+. I would extremely likely to recommend them.”

“They installed our HVAC system and they also do maintenance on it. They were extremely friendly, they are very professional, they seem to know what they are talking about. It's just overall very positive. I'd give them an A+.”

“My experience with Oliver has been excellent since the beginning. They've done all types of work and installation and maintenance. I'd give them an A overall. I don't have any problems whatsoever with them. I would very much recommend them—If anybody asks me, I would.”

“They call before work, good technician, comes in, knows what he's doing, clean worker, and left everything perfect. They just serviced the air conditioner. I'd give them an A overall.”

“I have a contract with Oliver for heating and plumbing. I like that they're on time and they're good at what they do. They've done heating and air conditioning maintenance, plumbing maintenance and electrical work. I'd give them an A overall. They've been great across the board. I'm very likely to recommend them.”

“They've always shown up on time. They always done the work efficiently, quickly and cleanly. I've never had a problem. Nothing negative. They do both the A/C and heating work for me. I would grade the overall experience with an A. They come on Saturdays for me if I need any work, and I appreciate it. I would extremely likely to recommend them, and have recommended them.”

“I like that Oliver Heating is reliable, conscientious, been with them for years, never had any problems. We have a service contract with them for the heating and conditioner, so they come twice a year for that. I'd give the overall experience an A. I would extremely likely to recommend them.”

“Oliver Heating is a very good company. I like that they are on time and they do a thorough job. They checked the air conditioner, and coming back in two weeks to do the heating. I would grade the overall experience with an A. I would extremely likely to recommend them.”

“I've used Oliver Heating for years. They are always on time. They did heating and air conditioning work for me. I'd give the overall experience an A. They wear their booties all the time. I would extremely likely to recommend them.”

“They're competent. They have very good solutions and they have very competent people implementing them. I use them for heating, air conditioning, electrical, and plumbing. I've used them to clean my vents; I use them for everything. I'd give them an A+ overall. They put all new wiring outside and an all new box. They're very good. I'm very happy with them. I recommend them all the time.”

“Oliver Heating was very neat and clean and efficient. They did multiple jobs for us. They did the A/C and heating. They've done generators and everything. I would grade the overall experience with an A+.”

“They have done heating and cooling and electric; those have been the most recent. I'd give them an A+ overall.”

“Oliver Heating is very good, and we've used them over 20 years. They have done HVAC work and electric work. I would rate the overall experience with an A+.”

“I liked everything about Oliver Heating. They do our air conditioner, our heater, and various other things like electric work and plumbing. I'd give them an A+ overall. Everything's fine. There's no issues.”

“There's nothing I can remember that I like about them—it was a while ago. They checked out my air conditioning. I'd give them an A+ overall. As far as I know, the quality of work was just fine.”

“They came out when they said they would, they repaired it, and everything looked fine. They did a good job. They serviced our air conditioner. This was the first time I've used them. I'd give them an A rating overall. I would recommend them.”

“It was just maintenance. Nothing, in particular, stands out. They've done just air conditioning for me. I would give them an A overall.”

“They are good. I like that they are on time and do the work and everything's fine. They come twice a year to service my air conditioner, my heater, my boiler or whatever. I would grade the overall experience with an A. I would likely recommend them.”

“They're very positive in every aspect. I would give them an A overall. They've done air conditioning and heating for me.”

“I like that they are courteous, were on time, are polite and they do good work. They installed a new heater for me. I would grade the overall experience with an A. Expertise—they followed up and that was very nice of them. I would very likely recommend them.”

“I like that they did what they said they were going to do. They were efficient, friendly, no problem; and if you have a problem, they fixed it. They serviced the A/C. I would grade the overall experience with an A rating. I would very likely recommend them.”

“They come when they say they're going to come, and they're very polite and know what they're doing. They've installed equipment and maintained it for heating and air conditioning. I'd give them an A overall.”

“They're very nice when they come, they come to work, they know what to look for, they ask the right kinds of questions, they do what they need to do, they clean up and they fill you in on what they've taken care of. They did the annual service heating system service. They also did plumbing work—repaired a bathroom leak for me. I would grade the overall experience with an A. Punctuality—they give you a call before their arrival to let you know about when they will be here and then they are prompt. Cleanliness—they don't make a mess. They wear the coverings so that they don't drag stuff in, they do fine. I would very likely recommend them.”

“They did a maintenance check for us. They were friendly. They get an A across the board.”

“They did heater work. They seemed to do a good job. The workers were good, courteous, and efficient. I'd give them an A.”

“I have used Oliver for my heating/air conditioning and plumbing needs for over ten years. They do excellent work and are well organized and honest—A+.”

“They are always on time, know everything about the units, and do the work cleanly and quickly. Their staff is outstanding.”

“Their heating/air conditioning service is excellent. Put in a new system in one day—works great. Servicemen are knowledgeable and courteous—A+.'”

“I've had Oliver for my heating and cooling needs for almost ten years. They have always been professional, and they do quality work.”

“I used them in the past when my A/C decided to quit during the heat wave. They came out the same day. They are great.”

“Corey is the technician who comes here every six months. Cannot say enough good thing for him.”

“They came on time. Installed a new heating and air conditioning plant, in a timely manner. The units have worked efficiently.”

“Have had Oliver service our heating and air conditioning systems for over 10 years with few complaints.”

“Called in to ask a question regarding our A/C unit, and was given a quick and accurate answer immediately.”

“Yearly inspection and contract renewal went smoothly.”

“They just maintained air conditioning. They get an A+.”

“I'll use Oliver again. They were quick, and the guy that came out was super professional and very friendly. He was accurate, and he did a good job. They did maintenance on my air conditioner. I'd give them an A+.”

“They are excellent. They were honest, thorough, and prompt, and they didn't try to oversell me on anything. They cleaned up well. Everything was a positive experience, overall. They replaced our whole heating and air conditioner system with a heat pump, and they continue to do things like vent cleaning and servicing our unit when it needs it. They've done a number of services. I'd grade them as an A+.”

“I think they're very thorough, and if there's I have an issue with, they're right there. They've done my heater, hot water, and my air conditioner. That is a combination of everything. I chose them over a different company because my girlfriend had them for years. I would give them an A++.”

“I use Oliver as a service for my heating, air conditioning, electric, and plumbing. I have the platinum program, which is the best that they offer, and they live up to the name. Whenever I have a problem, they make sure that they're out here expeditiously, whether there's ten inches of snow or no snow in the winter, and it's the same in the summer. All the service people have been very hospitable and courteous, and they're very clean when they come out to my home. Just recently with the air conditioning unit, they came to change the filters. They do all of that. They check the external air conditioner, they washed out the condenser, and they also change the filters. They're an A.”

“Oliver put in a new heating and central air system, and they were accurate and informative. They wore shoe covers into the house; they took them off when they went out and put them back on when they came back in. They cleaned up after themselves. They did exactly what the contract said they were going to do. There were no hidden fees or extras as they progressed with the job. I chose them over a different company because they had been bought out by the company that I had been dealing with. The same sales gentleman who'd done other work was still employed by them. He felt comfortable with the new company, and I went with them. I'd give them an A+, particularly for their customer service.”

“They did quite well. They did a great job. I would definitely recommend them, and I would definitely use them again. They did work for my air conditioner unit. They replaced parts, cleaned out the unit, and gave me my air back.”

“We were very happy with Oliver. They knew what they were doing, and they did it. They provided air conditioning service for me, and they installed it. It was fine, and we were happy with them.”

“I liked their quick response, and they were easy to schedule. They did a checkup and a tune-up for my HVAC. I have been using them since I moved into the house two months ago. They get an A grade.”

“The salesman was a very reasonable and personable guy. The work proceeded as planned, and everyone was courteous and followed up with any issues we had. We talked to a couple of contractors about one job, and I thought Oliver's plan was much more sensible given the choices. We had two things that they did. The first was to put in a new boiler, and that was under duress because it had failed in the winter, and it was a very cold season. They did that in a very timely fashion and provided us with space heaters in the meantime. The second job was to put in an air conditioning unit less than a year later. Based on the first experience, we had them in for a second experience. I have recommended them to family and friends. I'd give them an A.”

“I always have a good experience with Oliver. They're pretty reliable. They show up when I have an appointment on schedule, and they're always polite. They service my air conditioner and heater. I have a contract, so they regularly maintain it and service it any time I have any problems. I've been with them for several years now. I had them at my old house as well. I would recommend them because I think they're great. I'd give them an A.”

“The serviceman was courteous. He explained and showed me exactly what he was doing, and I felt really confident that he knew what he was doing and kept me in the loop, which is important. He did HVAC maintenance work. I heard about them through word of mouth.”

“The technician was friendly and knowledgeable. They did preventative maintenance on the HVAC system when I'd just moved in the house. I'd give them an A-.”

“Oliver did my heating, and then I had them come in and do my air conditioning. They were really good. When they were here, they said that the unit downstairs unit needed some kind of pan. I called them back, and they were here really quickly to fix it up for me. I'm quite satisfied with them. I'd recommend them. I would say they're an A-. I wasn't here when he fixed it, but my wife said he was in and out with no problem.”

“They fixed the central air. We would recommend them to family and friends, and we'd give them an A.”

“They got my problem solved. Every time I've used them, they've been courteous and prompt. I have no complaints for them. I was having a problem with the heater maintaining the temperature; it kept running and running. They tried different things, and then they finally got it fixed. Now we have the service contract for the heating, plumbing, and electrical. We do all our work with them now. I'd give them an A.”

“Oliver did a good job. I used them twice. They did my old house—installed a new air conditioner and heater, and they did an awesome job. I was happy with the company, and I'll be using them in the future. Everything seems to be good. They're an A+.”

“Everything was fine. Oliver installed the unit, and it's perfect. I like everything about them. Everything is excellent. I've used them for 25 years, and I'd give them an A+.”

“Oliver's technician was wonderful—very personable and informative. He serviced the air conditioning unit. We have used them for about 20 years. I would recommend Oliver to family and friends, and I'd give them an A—absolutely.”

“I was 100 percent pleased. I've had Oliver here twice to do a heater and my air conditioning, and they are fantastic. I would absolutely give them an A+. They couldn't have been nicer.”

“I've used a heating and air conditioning company—Oliver. They've been excellent. When I moved into my house, that was the company that was already contracted. Honestly, I had never heard of them until I moved into my house, so it's only been four years I've been working with them, but they've been very good. They show up on time, are always clean and professional looking, are very courteous, and explain everything to you. I'd give them an A+.”

“I had Oliver come in last week to put in a whole new air conditioning and heating system in. He also put in a new A/C and heater system at my other house. I give them an A+. They did fantastic work at the other house. I asked them to move my air conditioner over to the side of the house, and they did excellent work. They had to put holes through the walls, but they did it in one day. They cleaned up after themselves—they vacuumed and sealed all the holes they made. They were fantastic. I'd give them an A+.”

“I had a heating and air conditioning person; they put in a whole system. There was no air conditioning, and it had oil heat, so I had to change to gas and got air conditioning. I absolutely remember the company that put my system in—Oliver. I have a contract with them. They put the system in about four years ago. They come out, and they put everything in nicely—no problem, everything was straight and all that. They also were very neat, and everything was well done. You do get a contract. I have a warranty for ten years. I get a contract every year, so I have them come out in the spring for the air conditioning and in the fall for the heat. I've had to call them in an emergency, and their response was terrific. I had to call them about a thermostat; it malfunctioned in the winter, and they were there the same night to replace it. The temperature was going down to the low 50s; it was getting a little chilly. I like companies that are really good. I don't keep them otherwise. But I really rarely get anybody bad. I try to look at things—different types of features, other people—and I would give them the same high rating, an A+.”

“We had a very positive experience with Oliver. They've installed a new heating and cooling system. They've done the maintenance work; we have a contract with them on both of our heating and cooling units. They're always very professional and courteous. We have no complaints at all about their service. I'd give them an A+. We have them now for plumbing. My wife felt comfortable with the people in the home when they come. They cleaned a clogged drain in the tub. I would definitely refer them to others.”

“I had a positive experience with Oliver. They came out and did a yearly heater service. I have been in business with them for a long time—maybe ten years. It's been a long time. Their service techs are kind and thorough, and I couldn't say anything more about them. Everyone that's ever been here has been great. I would give them an A+.”

“They were just doing our regular yearly check for air conditioning, the last time they were here. They're on a service contract. We've had them for a number of years. They do a good job, and we've had a good experience with them. They keep their appointments, they fill out the paperwork, and they explain it. I think I'd give them an A+; they do a fine job.”

“Everything's been fine. They cleaned and checked everything, both the air conditioner and my heater. I'll give them an A+.”

“Everything with Oliver has gone well. We've been using Oliver since the '70s, when they opened up. It has absolutely always been a positive experience. They're friendly, for one thing. I don't feel like it's going to be a problem when they come in and I'm alone in the house—I feel safe. They're friendly, and they introduce each other when they come in or if somebody comes to check, which they do. When they were redoing the attic, it took them five days to suck out everything and then put everything back in. But each time someone different came, they stopped and introduced me, told me who he was, what he was doing here, et cetera, which made me feel extremely safe. They also do air conditioning service the same way. I was so pleased when I found out they do plumbing. The last thing I got was plumbing, and I thought, 'Hey, this is great,' because the plumbers that I've had before were having trouble climbing ladders. They were getting older, and I can see that they're going to be around for not much longer, and so I wanted somebody that I could count on. When I signed up for plumbing, I found that I needed a new electrician. So I called in and said, 'Yes, I'll take it.' Now I'm bugging them with a letter saying, 'Put carpentry on and you've got it made.' They'd have everything, because I could use a carpenter once in a while. So all of these fields have been positive experiences. Oliver's clean, for one thing. They'll put the shoe covers over their shoes when they walk in. The living room is linoleum because I have two puppies, so there's not a rug to walk on. I said, 'You can walk on it, it's OK,' but no, no, no—they put it on. We're absolutely dealing with professionals here. And I recommend them to everyone. I say, 'Just go to Oliver.' I was a teacher for 54 years, and I would give them an A+, 100 percent absolutely. I was married for 54 years, I've been around for 82 years, and I have never had such pleasant people enter the house and do work.”

“Oliver for heating and air does very well. I just use them as needed. I always feel comfortable with the workers that they send out.”

“We've used Oliver over the past years for maintenance of our heating and air conditioning. Oliver's fine—they're good. They're a very classy organization, and they're prompt. We've used them for years for our residence and rental property, and we're very pleased with them.”

“I use Oliver, and they're very good as well. They just do maintenance; they're very good. I have an A/C and a heater that are perfectly fine, so they just do the annual maintenance contract with them. They're an A.”

“Oliver takes care of my heating and air conditioning. They do just my maintenance and repairs for me. They've been all right; when I had a problem, they came out right away. There was a snowstorm where the heater didn't work, and they were accommodating. I do have one of their plans, but I don't have the best plan. They're conscientious—they have a checklist, and they write down different settings and everything. I would grade them an A. Our furnace is 15 years old, and they haven't pushed me to get a new one yet.”

“For heating and air conditioning, I call on Oliver. I've been using them for at least as long as we've been in our house, which is about 11 years. The technicians from Oliver are also excellent. Their customer service is excellent, and any repairs that they've done have held up over time. I would grade them an A. Oliver is plumbing and heating and air conditioning.”

“Oliver were the first people that I called. They were very courteous, they put the things on their shoes before they came in, and they went about their business and did what they had to do. They explain everything to you or show something to you if you have any concerns. I would recommend them highly. They had to give us a new furnace. Actually, it started out with the air conditioning unit—an old air conditioner; it came with the house along with the furnace—naturally, in the middle of the summer, on the hottest day of the year. The gentleman who came to look at it said, 'It doesn't make sense to replace an air conditioner only, when a year later you'll have to replace the furnace. If that's what you wanted to do, that's your money that you're spending, but it's cheaper—your heating system is old, so, if you do both at the same time you get a better break.' He went through everything—where the vents were and so forth and so on—and he looked at it all. He said, 'I would get this kind of air conditioner and this kind of heating system because it's computerized, it's new and everything. Anytime you have a problem you call us.' It was like a four-year warranty on everything. There was a little problem with the air conditioning unit, but it was very minor, but I've never had a problem with the heating. I've used them since; to me, they're good. I would give them an A+, because if something did happen I can always call them and tell them, 'Look, you guys were just here. Something doesn't sound right to me. It's not shutting off,' or whatever it is, and they send somebody. They did tell me that I had the temperature too low. If I moved the temperature up to 73 or 74, it will come on and go off at a normal basis. That was one of the problems because I had it down, and you had to put a coat on in here.”

“We did have our ducts cleaned. The duct cleaning was Oliver, and they were excellent. They were respectful of both me and my home when they came in. The two men that came were very nice and worked very neatly and promptly. I would give them an A. I haven't had any bad people.”

“I use Oliver; they're good. They're in the Delaware County. They perform well; the people are courteous and they're prompt—they schedule when they say, and they come. They do air conditioning and heating in summer and winter. I think they're about an A.”

“We used Oliver for air conditioning. They installed the air probably three years ago, and then they come back every year for maintenance. Their customer service is very good; I'd give them an A, and I'd recommend them to others.”

“I use them for heating and air. They're an ongoing service company. They do all our HVAC work in both facilities. They do replacements of units, service of units, and fixing of heaters and air conditioners. The workers are good; they're a good company—an A.”

“I used Oliver for heating and air. They're in Delaware County, and they were excellent. They're very knowledgeable and competent. They did the work in a good amount of time. I would recommend them to others. They cleaned up after themselves. They would be an A.”

“We use Oliver for heating and air. We have a maintenance contract with them for our heater and our air conditioning unit, and anytime we've had a problem they've been equally as good. They really do a nice job. Most of the time they do the maintenance, because they're relatively new units. They don't hold us up very long, and they're very close to their timing—if they say they're going to be here at 8:00, they're here at 8:00; they're very good at that. I would positively recommend them to other people. I would definitely give them an A, also.”

“I use Oliver. They do our air conditioning and heating maintenance. I think they're excellent. They finish the work in a reasonable amount of time. I'd give them an A.”

“We use Oliver for heating and air. They're excellent. Seven years ago, they installed our new furnace and A/C, and they've serviced it ever since. I would give them an A.”

“They did a cooling system tune-up. I just call them out to do that as needed. They arrive on time, they're always neat in their appearance, and they're always courteous. They explain everything to you, and they give you recommendations that are helpful—not just to spend more money, but stuff you can do on your own, too. They're an A+.”

“For heating and air, I call on Oliver. I've been using Oliver for over ten years. They replaced my HVAC system. That was ten years ago. They've done just regular maintenance the last three to four years. I'd give them an A.”

“I have used Oliver, and I would give them an A. What impressed me were both their technicians and their overall customer service. What stood out about them that I liked was an agreement that if you purchase a contract—a service contract—they will come right away if you have a problem. I have used them for over 20 years and never had a problem. That's pretty amazing. The neighbors use them as well.”

“I've used Oliver for air. They've done a checkup. They were pleasant, prompt, neat, and clean. They're an A.”

“For heating and air conditioning, we use Oliver, and they're excellent. They've done just HVAC maintenance. I have a contract with them. They're polite and respectful when they come out. I would give them an A.”

“I use Oliver for my heating and air. They do our biannual checkup. They do a great job—very courteous and prompt and customer-service oriented. Their customer service is very good. They usually finish their work in a reasonable amount of time. They clean up after themselves. I'd give them an A.”

“For heating and air, we use Oliver. They're relatively easy to get appointments with, and they're there on time when they say they're going to be—extremely courteous, very nice. They stand by their work. In fact, we just had a geothermal system put in, which is difficult. They're not the easiest things to do, and they stood by their work. It took a little bit of time and a little bit of adjustment because you're dealing with something several hundred feet in the ground. They just did a great job. I would definitely give them an A. We do use Oliver for plumbing as well, and we find that same quality of work with them in plumbing, definitely.”

“I've gone to Oliver for heating and air for about three years now. They put a system in for me. Their workmanship was excellent. They were very clean and did a great job. I do have a contract with them where they'll come out every so often. I've had no problems. They're an A, and I would refer them to others.”

“I used Oliver for my heating and air. They're great. We have an annual contract with them. They're an A.”

“We use Oliver, and they were out for a service check. They serviced the heating and air and have been for the past 15 years. We like their service. They're very good. We like their demeanor and attitude, and how quick they are to do everything. They put on booties. They're very good, and they finish their work in a reasonable amount of time. I would give them an A.”

“I had a positive experience with Oliver. They're a very good outfit. They maintain our heater. I would give them an A. They installed my heater years ago.”