Heating and Cooling Service, Installation, Repair and Sales

HVAC Certified Technicians. Heating and Cooling Services when you need it including
24-Hour Emergency Service Available!
Contact us
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309.349.0977

Summer Full System Special

Take advantage of these super low seasonal prices for a full HVAC system. You can’t beat these prices! Call 309.349.0977

$6,800.00 complete HVAC system which includes 80% efficiency furnace and up to a 3 ton 14 seer a/c unit.

$7,400.00 complete HVAC system which includes a 95% efficiency furnace and up to a 3 ton 14 seer a/c unit.

Get a Free Quote

Our Services & More

Providing over 15 years of quality service, top-of-the-line products, certified installation and repairs for Cooling and heating,
in the Peoria, IL and surrounding areas. We're Licensed Certified HVAC Professionals.
24 Hour Emergency Service Available: For Heating and Cooling call services call 309.349.0977

HVAC Heating Repair installation, & Maintenance

Looking for services on your furnace, new heating equipment built to last, or just looking for a maintenance plan? We offer all this and more. Give us a call today!

HVAC Cooling Repair, Installation, & Maintenance

From small repairs to large AC installations we are here to help from start to finish offering affordable maintenance plans to keep your AC investment running smoothly.

Ductless Heating & Cooling Systems

Looking to heat or cool one or more spaces in your home for a more comfortable environment? Choose our RunTru® Ductless Systems and replace those old inefficient window units.

Indoor Air Quality Systems

If you are concerned about your airs quality ask us about humidifiers, dehumidifiers, and purifiers for your home. We're here to help!

Heating & Cooling Products

We sell top-notch air conditioners, furnaces, thermostats and controls, air handlers, heat pumps, specializing in RunTru® Products...the newest name in heating and cooling systems.

Service Specials & Credits

Get our latest specials on heating and cooling and see how you can save on energy efficient products. Coming Soon!

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Why Choose Us

Diamond Climate Control Systems customer satisfaction has always been exceptional going above and beyond helping our customers with their heating and cooling needs. We take extra care to do the job right meeting local codes. We provide same day service in most cases and also provide 24-hour emergency services for heating and cooling emergencies. We serve residential clients and offer a variety of money-saving solutions. Our technicians are HVAC certified providing top-of-the-line equipment.

Diamond Climate Control Systems combine our use of the highest quality parts and equipment, and our dedication to delivering exceptional service to satisfy our customers. We provide top-notch services for air conditioner and furnace repairs, sales, and installation in the Peoria, IL and surrounding areas. 

Looking for a heating and cooling maintenance plan? We provide affordable maintenance plans keeping your investments running smooth giving more life to your heating and cooling system. 

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Client Testimonials

5/5
"Had a great experience with Diamond Climate Jim was very knowledgeable and experienced! They did a super job would gladly recommend their services."
Rose O.Google
"Jim was very professional and timely taking on a job others did not want to including the original installers. Very warm and happy with the results."
Swear3239Google
"Pipe replacement, worked fast and efficiently, good work."
Megan C.Google
"We contacted Diamond Climate Control Systems through Yelp to get an estimate on repairing 3 leaking faucets. They responded right away. Virgil came to give us an estimate on a Saturday. He got us scheduled the following week and was able to get the job done quickly. He responded quickly when I texted him with a question. Everything turned out great. Faucets are all working well. Virgil was very knowledgeable and professional. The cost was very reasonable. It was a stress free experience. We would definitely call them again for plumbing needs."
Angela S.Google
"We bought a new house and had no idea what we were doing. The other places we called were going to charge much more and helped us understand what we were looking at. Call them now! You won't regret it."
Jade P.Google
"We were in a desperate situation when our 30 year furnace went out and needed to be replaced. Not only was Jim able to get a new furnace installed the next day, he made me a great deal on new AC install! We are extremely happy, warm in the winter and cool in the summer. Nice plus is that our utility bills are cheaper!! This new system will quickly pay for its self! AND Jim called me several days later to make sure the system was working properly. Very professional!"
Wendy C.Google
"Jim and Jamie came out and installed a new furnace, evaporator coil and condenser into my home. Very professional and stayed to see the job through to completion. Next morning Jim followed up to make sure everything was working good and if I was satisfied. Couldn't ask for a more professional duo. Highly recommended and I will be using them for all of my service needs. Photos included are of near completion of the project. Once again, highly recommended."
Jason S.Google
"Very professional, came quickly and had the ac fixed in 20 minutes! Thank you for coming so quickly on a Saturday. Great pricing also!"
Kayla M.Google
"I called a few companies and even had one come out for estimate.. the guy that came out didnt seem to know to much so that's when I called diamond climate control explained to Jim what was going on and he was very up front about everything and came out at 7pm that night to take a look and had me an estimate the next morning.. he is very professional, polite, honest and no funny business. The price was very reasonable and Jim very punctual he also had good vibes so we went with him. Very pleased with the final results, the length of time it took and how detailed Jim was to make sure everything was running right before even taking the second half of payment and leaving my house. I will recommend Jim to anyone who asks for recommendations and for future work needed on my AC and furnace."
Unicorn L.Google
"Jim from Diamond Heating and Cooling worked with me to resolve the issue with my furnace."
AnaMarie W.
"Called immediately, diagnostic was thorough & Professional. And, was ready for install promptly."
Rick H.
"I will 100% recommend and I would prefer all future HVAC needs to be completed by DIAMOND CLIMATE CONTROL SYSTEMS."
Thomas R.
"Jim at diamond is a real pro. He is professional that understands the science and engineering behind what he does. When I request service from Ahs I call to request him."
Megan W.
"Arrived within minutes of Service request ! (It was unbelievable) Their Team seem more knowledgeable than most & very efficient without cutting the corners I see most other Contractors unfortunately doing."
Rick H.
"Great company and very professional and friendly."
Patti V.
"Excellent service and Jim was first class"
Stephen W.
"This company is top-notch, they understand HVAC systems and are very punctual."
Leann D.
"Very professional and knowledgeable. Politely and thoroughly answered questions. Would definitely request this company for future services in its given fields."
Susan C.
"Best team to work with"
Nadia S.
"Technician quickly solved the problem but I had to contact him to schedule service. Once I reached him, he was able to get to my AC that day and was professional."
Michael P.
"Fast and friendly service. He fixed the issue and then gave me helpful ideas to help keep my unit working definitely would recommend"
Caryn M.
"Fast and friendly service. He fixed the issue and then gave me helpful ideas to help keep my unit working definitely would recommend"
Luis A.
"Great service. Very professional, efficient and personable. "
Quentin A.
"They were on time and professional."
Solomon K.
"I'm extremely happy with the service."
Chad H.
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How Can We Help You!

Let us know what services you’re looking for for your heating and cooling needs.

Hours of Operation: Monday-Sunday: 8am-6pm

Phone: 309.349.0977

24-Hour Emergency Service:

Schedule a Service