Name: HVAC Contractor
Brand: Oliver Heating & Cooling
Rating: 4.6 (2043 reviews)

How Long Do Water Heaters Last?

Everything in your home has a shelf life, especially anything that is powered by electricity, gas, or oil. A typical water heater’s life span is between 8 and 12 years. There are several reasons why water heaters eventually require a repair or need to be replaced. […]

Is Your Home Ideal for a Tankless Water Heater?

Many homeowners are taking an interest in tankless water heaters because they’re more energy efficient than tank-based water heaters. In addition, they tend to last longer and offer other benefits. However, how do you know if a tankless water heater is worth the investment for your home? […]

What Size Water Heater is Right for My Home?

Your home’s hot water system plays a vital role in both the comfort and health of your family. But, how big does your water heater need to be? Determining the right size depends on a number of different factors. […]

5 Signs of a Sewage Leak

When you trip a circuit breaker or your heating system fails, you can tell. Plumbing, however, isn’t as easy to read. Because your sewage system is underground, it’s not always obvious when there’s a problem. Here, our plumbing experts share five signs to look for that may indicate a sewage leak. […]

When Should You Replace Your Hot Water Heater?

Even with regular water heater maintenance, it can be tough to tell when it’s time to replace your hot water heater. Here, our experts share some signs that could mean a new model is in your future. […]

7 Things You May Not Know About Water Heaters

Every day, many homeowners take their hot water heaters for granted. In fact, we often forget about them until we run out of hot water (especially if it’s during a shower). Our hot water heater installation team thought they would share some fun facts about water heaters you may not already know: […]

12 Plumbing Facts You Probably Never Knew

At Oliver, our plumbing service is almost as popular as our HVAC services. From toilets to sewer lines to showers and more – we’ve got you covered. For fun, check out these interesting facts that you may not have known about plumbing. […]

The Future of Water Heaters Looks Pretty Interesting…

At Oliver, we’re always interested in new plumbing developments – especially if they’re beneficial to homeowners. Recently, we came across an article in the Washington Post about the future of water heaters. Chris Mooney explains the potential future relationship between water heaters and the power grid. […]

How to Clean Your Metal Fixtures

While we do a lot of work in the heating and cooling industry, some people forget that we also specialize in plumbing. Our plumbing service experts are here for your plumbing installations, repairs, and to offer general tips, like the best way to clean your faucets and fixtures. […]

How Do Self-Cleaning Water Heaters Work?

We may not use our heat year-round, but we certainly use our hot water heaters. From showers to laundry to dishwashers, and more, there’s a lot of water that travels through the water heater tank, and with it comes minerals and impurities. How often you need to clean your tank depends on whether you have a regular water heater or a self-cleaning model. […]

Feedback From Our Happy Customers

At Oliver Heating & Cooling, we are dedicated to our customers above all else. Our unwavering commitment is to achieve 100% satisfaction in every interaction. We go the extra mile to ensure that our customers receive exceptional service and unmatched quality.

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Oliver Heating & Cooling

4.6

Based on 2097 reviews

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Ed T.

Crystal Clean Cleaners is hands down the best cleaning service I’ve used! They’re always on time, professional, and leave everything spotless. The attention to detail is amazing, and their customer service is top-notch. I highly recommend them to anyone looking for reliable and high-quality cleaning. You can tell they really care about their work and their clients!

Lori M.

Perry has very nice & professional. Oliver has great technicians!

Lori C.

David the plumber was awesome! Very kind, and helpful. When we replace our system it will be with him

Gregory F.

Mr. Miller and Anthony rate 5 stats for professionalism and great customer communication.

darius C.

Had the yearly inspection done service tech Perry was amazing answered all of my questions explained everything that was needed and why 10/10

James M.

Perry Robinson - awesome service! Thank you!!

Barry M.

Very satisfied with service.

Kirk M.

Oliver replaced our HVAC system. They installed the original system when house was new and it lasted 30 years! The crew arrived on time. Clint, Thomas & Anthony were courteous and technically proficient. They were able to answer all our questions succinctly & helped explain how to use the new equipment, such as the thermostat. You can tell they know what they're doing and gave us substantial confidence in our new system. Dan, our project manager was informed about their products and equipment plans. He worked with us to put together a plan we were excited about and got us scheduled before he left. No pressure tactics here, just informed and helpful. It was the same great service we've gotten from Oliver in the past. We recommend them for your HVAC needs.Updated 4/22/25: our technician Perry arrived on time and was very professional. He did a thorough job checking out our AC system and even made some recommendations about cleaning that could prolong the life of the system.

doug D.

Perry came today to do maintenance on my air conditioner. He did an excellent job. Very professional and knowledgeable.

Deirdre O.

Had another positive experience ,today with Tech Ryan ,for an a/ c inspect.

Jim D.

Just had David Miller here working on our oil furnace. The guy really knows his stuff. He’s been here before and I requested he come out again for our annual maintenance. Oliver is lucky to have such a conscientious worker.

Frank D.

My furnace was not generating any heat and within one day, a new unit was installed. the previous unit was about 18 years old. I was very pleased with the service and professionalism.

Diane S.

Excellent service; came prepared to make a recommendation appropriate to our needs and budget; timely installation; pleasant personality; not pushy.

Robert K.

Replaced oil furnace, central air, and hot water heater in a timely and professional manner. Old heater failed me in the coldest days of January. My regular service company could not in a timely manor repair or replace equipment after evaluating the problem. Oliver arrived the same day to give me a quote and replaced the system the next business day. Workers were professional, thorough, and courteous and had the system replaced and running during one visit. They also quickly followed up to take care of some miscellaneous items.

Steven N.

Our experience with Oliver over the past decade - customer focused, incredibly high quality and high integrity. Highly recommended.

Kathryn S.

I’m very glad that I contracted with Oliver Heating and Cooling. The staff have really been effective in servicing my 75 year old home and its maintenance needs. They are response, on time, and make sure things are right, even if they have to come back for a rare repeat visit. The staff are very professional and always offer reasonable solutions. I know that I can depend on the Oliver team and they are cordial and respectful.

Brian T.

Had Javier come to look at ac today he was very knowledgeable and professional highly recommend

Christin B.

Am very grateful for Anthony from Oliver! We realized this cold weekend morning, with a storm on the way, our thermostat panel was blank and the heat wasn't working. He was able to quickly confirm the problem was with the thermostat and not our heater, install a temporary thermostat while we wait for a replacement, and explained that if we download an app with the new thermostat we will be able to navigate even if the thermostat gives out again. Prompt, quality service.

Dominick E.

Oliver is my Go-To HVAC company, and here's why. I have learned that a company is part product (equipment) and part people, (office staff, process managers and field-service technicians). Well, Oliver uses top quality equipment and friendly, knowledgeable and helpful employees. Even the best equipment wears to a point where problems arise, in fact, sooner or later there will be a problem of some sort over the life-cycle of any machine. Every company sells machinery, so this is a constant amongst companies, but the difference between companies is the people. So, when you think about it, it is the people and company policy that matters most. Here's where Oliver is the best; I had an issue, the Technician came out, trouble shot the cause of the problem, got me up and running and recommended additional work to improve of my system. He said the Service Manager would call me to discuss this further. The next day, the SM called and scheduled a second call to make the improvement that the Technician had suggested. The Technician was Walter. Walter checked my system up one side and down the other. He found areas that needed attention and corrected them immediately. The SM ordered that second visit with all the necessary items to address every detail discovered by Walt, which even included re-leveling my outdoor unit! So, I found Walt to be the best Service Technician I had ever met as he described what he had done and why. As an engineer myself, I could tell that Walter is a dedicated, talented and masterful HVAC Technician. In the end, my system is running perfectly again, and in fact, it almost seems like it is now better than when it was brand new. But maybe this is my mind being so delighted with Walt’s work and the proper business policy and treatment from the Oliver’s SM, that I am imagining this? Maybe so, but my wife is no longer complaining about being cold and my system is humming like new. No second-guessing, rest assured and choose Oliver. You will be glad you did. (DE-Feb. 2025)

Chris G

Oliver’s friendly, trustworthy and professional service team quickly completed a high quality installation of our new boiler on an emergency basis - I’m glad we called Oliver!

Tom P.

Very professional and knowledgable

Jerry N.

Brandon was just a great guy and and great employee for you company

Lou M.

Samuel was very professional and diligent

moth M.

Jason Stouch was an absolute delight. incredibly kind and fun to talk to. he explained everything he was doing and every issue we had with our heater very simply. i was very exhausted after a long day and honestly i’m dumb on a good day but he made me feel a lot less anxious about my questions/ignorance/fears. he even helped me realize that some of our vents were blocked/dirty and therefore part of the problems we were having. just all around great service.

Jaynette A.

Excellent service

Larry Y.

Katheryn understood our problem and schedule a tech right a way . The tech , Tymir , listened to our concerns and checked out our problem and found the issue and made the necessary repairs . He was very polite and professional .

Gordon W.

William did a good professional job servicing my HVAC system.

Jessica D.

I highly recommend Oliver heating and cooling. Their company did a “heat for the holidays” giveaway and my father was chosen as one of the families to be blessed with not only a new heater but water heater too as he hasn’t heat in quite a few years. The team was very professional and nice. Even the owner stopped by as well. We are forever grateful for them and all their hard work and kindness to our father.

Joseph D.

Absolutely so grateful that heater for the holidays exists. I was nominated and was one of the chosen customers to receive a new free heater from the company, as well as a hot water heater which was beyond unexpected and I am absolutely grateful for Oliver and the entire technician team that came out on an early Saturday morning to do the work as well as the owner himself who came to introduce himself. My family and myself will be forever grateful for you guys and truly cannot thank you enough.