#1 Greenville, DE Heating Repair Company

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

Since 1971 Your Peace of Mind
has been Our First Priority

"*" indicates required fields

Name

This field is for validation purposes and should be left unchanged.

Schedule Online Today

Name*

Email*

Phone*

Untitled*

Requested Appointment Date*

Requested Appointment Time*

Best Time to Contact You to Confirm Appointment*

Peace Of Mind Membership Opt In

I want to learn more about Peace of Mind Membership

SMS Consent

I agree to receive recurring automated texts from Oliver Heating & Cooling at the number provided. Message frequency varies. Msg & data rates may apply. Reply STOP to opt out, HELP for help. Consent is not required for purchase. View our SMS Terms of Service.

By submitting this form, I consent to Oliver Heating & Cooling or its affiliates responding to my inquiry with calls that may be made by an autodialer to the number I provided. If you do not consent, you can call us to obtain our services. View our Privacy Policy.

Stay warm all winter long by making sure your home heating system is both reliable and efficient. If you run into any heating issues, Oliver Heating & Cooling has you covered with expert repair services in Greenville. Give us a call at (888) 810-2681 or reach out online, and we'll send a seasoned technician to get your home cozy and warm again.

Certified Furnace & Heater Repair Technicians

Every HVAC technician at Oliver is trained to provide not only excellent heating repair but also exceptional customer service. You’ll have peace of mind knowing that a professional, knowledgeable technician will be dispatched to your home to fix your heating system promptly. Our NATE-certified technicians are equipped to handle furnace, heat pump, or boiler repairs in Greenville. With over 50 years of service, Oliver has the expertise and equipment necessary for efficient and effective heating repairs.

Emergency Heating Repair Service In Greenville, DE

Experiencing heat loss during the winter months can be more than just an inconvenience. It can create health hazards and cause issues like frozen pipes. That's why waiting for days to get heating repairs isn’t an option. Oliver provides emergency furnace repair services outside of normal business hours, so even on weekends or holidays, you can count on us to keep your home warm.

Get Help Now

Do I Need My Heater Repaired?

A heater that’s not turning on or blowing cold air clearly needs immediate attention. But often, your heating system will give you warning signs before a major failure occurs. Be aware of any odd noises, unusual smells, cold spots in different areas, frequent thermostat changes, or a sharp increase in your heating bill this winter. If you notice these issues, it’s wise to contact Oliver for an inspection of your HVAC system.

Types Of Heaters We Service

Oliver is a leading heating company in Greenville with a team of seasoned HVAC technicians skilled at handling all heating technologies in the region. From furnaces and heat pumps to boilers and systems that use electricity, natural gas, propane, or oil, our experts have the knowledge and experience to manage them all.

Furnace Repair

Furnaces are the most commonly chosen heating system in Greenville and can be powered by natural gas, propane, oil, or even electricity. These forced-air systems distribute heat through ductwork and vents, and they need regular seasonal maintenance to address wear and tear and dust buildup.

Heat Pump Repair

As technology advances, heat pumps are becoming a more popular choice due to their high efficiency and dual functionality. They not only heat your home in winter but also provide cooling during the summer months. Additionally, heat pumps can be combined with furnaces in a hybrid system to more effectively manage even the coldest temperatures.

Boiler Repair

Boilers work as hydronic heating systems, circulating hot water or steam through pipes to radiators or other heat-dispersing units. This process warms your home effectively. To keep your boiler running efficiently, it’s important to schedule seasonal maintenance, just as you would with furnaces and heat pumps.

Have Peace Of Mind With Heater Maintenance

Avoid the hassle of heater repairs this winter by booking seasonal maintenance with Oliver. Our affordable and convenient maintenance plans cater to all heating systems, no matter their age. The service includes a thorough inspection, cleaning, lubrication, and component tightening. Plus, if your furnace needs repairs, our plan members benefit from a discount on those services.

New Energy Efficient Heater Installation In Greenville, DE

High heating costs or a significant repair bill might indicate that it’s time for a new heater. Oliver provides expert installation services for furnaces, heat pumps, and boilers in Greenville. We’re here to help you find the perfect system for your home. Contact us now to consult with one of our comfort specialists and discuss your choices.

Trust Oliver For Fast And Affordable Heating Repair In Greenville, DE

Oliver Heating & Cooling provides trusted heating repair in Greenville. If you want skilled services, call us at (888) 810-2681 or schedule an appointment online. If you are considering installing a new home heating system, we can set up a free on-site consultation with one of our comfort specialists.

Schedule an Appointment

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.

Excellent

Oliver Heating & Cooling

Based on 2503 reviews

See all reviews

review us on

Lynne M.

Oliver has always provided us with great service. I have contracted with them for a number of years and they come out twice a year to clean and service my furnace/ac units, which they installed about 4 years ago. The technician who was here recently (spring 2026) was Emily Keiderling and she was wonderful (loved seeing a female in this male dominated field!). In addition to prepping the ac unit for summer, she also addressed an issue with the thermostat. She had a young man with her (he has been here before and is also wonderful but I do not recall his name, unfortunately, to mention him personally here). They were clean (wore shoe covers), skilled and professional. They even took the time to neatly coil the garden hose after they were done using it to clean the ac unit. Very thoughtful! I highly recommend Oliver.

Susan D.

Perry Robinson is an excellent technician and provides thorough and professional service explaining what is needed and getting the job done. I appreciate the advice and care given to my HVAC needs. I have been a customer of Oliver for over 20 years

Christiana J.

Oliver has always delivered great service with friendly technicians. Dylan Garrity showed us the problem, told us what he needed to do to solve the problem and gave us a quote. He was able to answer our questions, as well.

Daniel C

Was able to schedule an appointment quickly and without a hassle. The technician, Aiden McHugh, was on-time, courteous, thorough, communicative, and knowledgeable. Would recommend.

Sue W.

Emily K did a very quick but thorough air conditioner check today.
She is very ffriendly and knowledgeable. I hope she is my service tech again!

Jeffrey B.

Oliver heating and cooling did a wonderful job and was extremely helpful with replacing my steam boiler. Their managers and workers were very understanding, great communicators , and very dependable I would highly recommend Oliver heating and cooling for any of your service needs.

Yvette M.

Great semi annual maintenance visit, Emily Keiderling was helpful friendly and professional!

Michael B.

Perry was great! Super friendly, knowledgeable and thorough!

Jack Z.

Technician Anthony Levy was extremely courteous and knowledgeable about my entire system
Also, I thought he was much more thorough than previous maintenance
I only wished I could specify a specific technician in the future

Jennifer C.

I have used Oliver for 20 years and this firm continues to deliver exceptional service from emergency services, to technicians, to schedulers, to salespeople, and top level management. Every level of service is professional, prompt, and courteous. Oliver delivers not only excellent HVAC services but, my experience with plumbing and electrical has also been top-notch ! Thank you Oliver !!!

Kathy C.

Perry was efficient, so pleasant and so nice to my goof ball dog !
Kathy Compton
(Devon)

Don G

I was very impressed with the service technician, Aiden McHugh, who did the annual maintenance on our AC unit. He did a very thorough examination and made sure that everything is working properly. He also gave us information about the various components that he checked as well as taking the time to provide detailed answers to my questions. Aiden is also very friendly, and it was a pleasure having him here doing the maintenance.

donna M.

Tyrone did a great job inspecting my AC unit.

Matthew N.

The technician (Walt O’Brien) was very knowledgeable about my system, professional and courteous.

Steve E.

Perry Robinson at Oliver does a great job with our heating and air conditioning.
Thank you.

Ron I.

Perry Robinson did a very great job! He was very professional and courteous. Thanks!

Anita B.

Emily was very professional and thorough.

Cindy

Alex S. From Oliver came by today to conduct maintenance /inspection for my Honeywell generator. He was great- timely, professional, helpful and knowledgeable. He also was very patient and informative as I walked him around my equipment asking numerous questions. This is the type of service call that I always hopes for!

John C.

Emily Keiderling did a great job. Professional and friendly, very happy with her performance.

Edward D.

Dylan explained in detail the service he performed. He answered all of my questions. Dylan was very knowledgeable and professional.

John L

New review 04/24/2026:
The old system finally gave out after years of reliable service, thanks to Oliver keeping it running as long as it did. I had Oliver install a new HVAC system, and Ron and Jeffery handled the installation. They did an outstanding job—everything looks great, and no detail was overlooked, very professional job. The system is performing better than any I’ve had in this house before. They took their time, ensured everything was working properly before leaving, and even walked me through how to use the new thermostat. Thank You.

Older Post around nine years ago;
Thank God I switched over to Oliver Heating. Your technician Mike is very knowledgeable and professional and courteous. He picked up on a problem the first time he was here that the other company had missed for years.He always seems to go that extra mile for his customers. And Debra is always so helpful on the phone.You have a great team there Oliver. Thanks.

John L

Marge H.

When we make an appointment for our usual service for our heat pump maintenance, it was done professionally and in a timely manner. When the technician, Tan Mai came (on time) he was friendly, professional and more importantly to us as senior citizens very knowledgable, and he took the time to explain everything to us in a way that we could understand. He also gave us pointers which was very appreciated, especially since our heater/heat pump is 13 yrs old, over the 10 year warranty period. We opted to replace our capacitor (voltage stabilizer) and it was done quickly and we’ll now have peace of mind! We have always had good service on prior occasions but Tan was exceptional! Thank you Olivers and Tan for your continued excellent service!

Bob K.

Nick & Danny are very friendly, professional and knowledgeable. They completed the new water heater service and plumbing in a timely and clean manner.

Joan Z.

Matt was very professional, prompt and courteous!

Thomas M.

Professional , Pleasant, knowledgeable, Efficient.

Yvonne K.

Ryan did a fabulous job servicing our HVAC.

Jack F.

Hello
Tech Domir Mcgurn came out for my AC service call. Cleaned unit all good. Thanks!

John N.

Anthony Levy did an outstanding job servicing our heating and cooling system. He works for Oliver

E C.

The service tech was timely and professional. I could not be more satisfied with the service they provided which is why I continue to use Oliver after many years.

kat R.

Dylan was very thorough and did a great job on my service call.

Kelly G.

Perry Robinson was professional and honest during our maintenance service. Would highly recommend.

Ila P.

This was my first time using Oliver HVAC and I was very impressed. Alex Little, who is a project manager, came to check on my water heater. He thoroughly examined the problem and did the site survey. He explained to me all the details about my old water heater and how badly it was installed with a plastic and metal exhaust pipe and it was against the code requirements. He is very professional and knowledgeable. He took the time to explain to me the process of replacing the new unit with new pvc venting for exhaust. Alex and his team, Tashaun and Anthony did a great job. Tashaun and Anthony cleaned the area very nicely after installing the unit. They were very polite and professional.
Thank you for your exceptional service. I highly recommend Oliver HVAC.

James J.

Perry Robinson came and did our inspection today
He was very professional and informative

Dave P.

I wanted to share about the professionalism and friendliness of Anthony Zuppo, an Oliver HVAC technician. He was very thorough in his work to tune up my AC unit in prep for the summer months. I was impressed with his honesty and “no pressure” suggestion to upgrade my compressor and A-coil since they are approaching end of life and that some of the circuit boards were looking pretty bad from normal wear and tear. I would highly recommend Anthony and Oliver to anyone looking for a quality maintenance structure in maintaining your HVAC equipment.

Nick j L.

Walt O’Brien was super professional and friendly when he came and serviced my HVAC system. Runs like a charm!

Nancy K.

Oliver installed window well covers for us. They look terrific and will certainly do the job. The technician, Dale, did a wonderful job. Oliver has established a high standard in all the work they have done in my home over the years. Another job completed with the same high quality.

Howard M.

Judah was knowledgeable and throughly excellent.

deborah S.

Joe E from Oliver Duct Cleaning - fabulous service, very thorough and good at explaining how things work

David B.

The installation team consisted of Tommy, Clint and a junior technician. Tommy arrived early and we discussed access, set-up, and technical approach. Tommy prepared the area so that when Clint and the equipment arrived, the installation was quickly underway. After the thermostat was placed, Clint provided a clear tutorial of its operation. Clint and I then inspected the installation of the air conditioner and the gas furnace. All of my questions concerning purpose, operation, and maintenance were answered. I appreciate the tips and insight that Tommy and Clint provided. Clean-up was meticulous. Altogether a very satisfying experience for a conscientious homeowner.