Give us a call! 405-912-5900

Interstate Heating and Air Conditioning has been the loyal provider of HVAC services in Norman, OK since 2002. From AC repair and AC replacement to complete Furnace repair, we are the pros you can trust to get the job done correctly. Our Certified AC technicians, really know heating and cooling and will have your air conditioner or furnace repair done quickly. If you need an Air conditioner installation or a furnace installation, we can help with that too. Ask about convienent financing options for a new HVAC system.

If you want to see why Norman, OK chooses us for heating and cooling when quality is needed, just have a look at our reviews.

UV germicidal lights purify the air by killing up 90% of all microbes, mold spores and viruses. For allergy sufferers and those prone to health problems, UV lights are very beneficial. The UV light in an air conditioning unit is positioned in the system’s return air duct, zapping particles and oxidizing the air as it passes through.

For more information on UV lights, click here or contact us online and one of our knowledgeable team members will be in touch. Our company has been providing indoor air quality solutions to the Norman area for almost 20 years. At Interstate Heating & Air Conditioning, we provide expertise in heating and cooling at an affordable cost, satisfaction guaranteed.

In the Norman area, residents can expect to pay between $3,600 – $6,600 to replace a central air conditioning unit. The end price will be determined by the size of the house, the quality of the unit, and the complexity of the ductwork involved.

Average Cost: $5,000
Typical Range: $3,600 – $6,600

If you think it’s time to replace your AC unit, Interstate can help. We offer free estimates on all of our services, including installations. Our highly trained and experienced technicians are certified so you can rest assured that the installation will be completed with no mistakes. We offer competitive prices on quality units as well as financing options. Contact us online to learn more or to schedule a consultation!

Your air conditioner is freezing up because either something has adjusted your system to cause the evaporator coil to cool more than it should or there is a block in the air flow in your house that is keeping air from transferring its heat to your system. Some ways you can avoid having this occur include:

  • Have a technician check for refrigerant leaks.
  • Change your air filter.
  • Check that the blower fan is functioning properly.
  • Make sure there are no blockages in your condensate drain line.
  • Inspect your vents for any obstructions.

For more information or to schedule a service check, contact Interstate online and one of our knowledgeable team members will be happy to assist you. We are available 24/7 to keep your home cool around the clock.

Local Reviews
for Norman, OK

Interstate Heating & Air Conditioning Rated 4.9 out of 5 stars based on 108 customer reviews


New heat and air estimate




Review of Interstate Heating & Air Conditioning

Good explanation of different model features and benefits.


Great service and on time.




Review of Interstate Heating & Air Conditioning

Issac filled me in on current and past status. Answered my questions in full. Discussed what would be looked at in the spring. Gave a good summary of what he looked at. Very professional. Thanks Issac.


Great service




Review of Interstate Heating & Air Conditioning

Fast and friendly


Very good




Review of Interstate Heating & Air Conditioning

Issac is very professional and polite


estimate job




Review of Interstate Heating & Air Conditioning

Great job


Great




Review of Interstate Heating & Air Conditioning

Very happy with the service, give Brandon two thumbs up, great representative for your company. Gary Hickman


Ok




Review of Interstate Heating & Air Conditioning

Yes


Outstanding service!




Review of Interstate Heating & Air Conditioning

Brandon has visited several times. He is friendly, knowledgeable, and honest. Would be happy if he came every time!


Great service!




Review of Interstate Heating & Air Conditioning

Brandon took the extra step & solved the drainage problem. I appreciate his dedication & work ethic!


Great Service




Review of Interstate Heating & Air Conditioning

Explained the problem and fixed it quickly


Great Team!




Review of Interstate Heating & Air Conditioning

From Amanda to my tech Jake these professionals treat you well as a customer.


Great Service and Price




Review of Interstate Heating & Air Conditioning


Good service and honest




Review of Interstate Heating & Air Conditioning

Had an emergency call, they were on time and were honest on the repairs!


Great service




Review of Interstate Heating & Air Conditioning


Great everything




Review of Interstate Heating & Air Conditioning


Very competent help




Review of Interstate Heating & Air Conditioning

Inspected system and gave us choices about next steps


Excellent honest To my knowledge service.




Review of Interstate Heating & Air Conditioning

Have been very happy with service provided by this company. EVERYONE that I have dealt with has been professional, friendly and polite. Information for upgrades and add-ons has been provided, but never any pressure to buy. To my knowledge they have never told me I needed something that I didn't. I have a family member that used to be in the industry and they have always confirmed the accuracy of what Interstate employees have told me when evaluating our system. Again, very pleased with the service provided.


The best




Review of Interstate Heating & Air Conditioning

I come back to then time and again always reliable


Good service




Review of Interstate Heating & Air Conditioning


Great Service




Review of Interstate Heating & Air Conditioning


Exceptionally Courteous




Review of Interstate Heating & Air Conditioning

Kianoosh was exceedingly courteous & efficient while working in our home. He made certain that he thoroughly explained everything being done and updated us periodically. Lastly, we were very pleased when he gave us a few pointers for extending the life of our AC system. It is always great when we are able to learn things that will ultimately extend the service life of our home’s systems—as well as saving money in the long run!


A




Review of Interstate Heating & Air Conditioning


Great service




Review of Interstate Heating & Air Conditioning

Very pleased with my service


Great. Thanks 👍




Review of Interstate Heating & Air Conditioning


Very good thanks




Review of Interstate Heating & Air Conditioning


Joseph K.

Joseph K.

I arrived to bid a system replacement. This bid is for a 80% carrier deluxe furnace with a 17.7 seer two stage carrier condenser and a free 5 ton matching coil. This also included increasing the return plenum to match the new deluxe furnace and a full metal drain pan under the furnace and free evaporator coil. This bid is good for 30 days or until supply’s last for the September special free coil. If you have any questions please contact me and I will do anything I can to help you in anyway possible. Jake Kring.

Near Highland Ridge Dr, Norman, OK 73069
Joseph K.

Joseph K.

I arrived to bid a system for replacement. I first inspect the indoor system I found the system to be a upflow in the attic. I then inspected the condenser. To replace this system located in the attic we are going to have to convert the system from a upflow in the attic to a horizontal in the attic. In order to do this we will have to install plenums on the system to connect the new supply duct. We are to replace all supply ducts with new duct work. We are to remote the old 14” duct and install a 18” duct to the exsisting boot and grill. We are to install a 10” return duct in the master bedroom we are to installed a 6” duct with a damper in the computer closet. This bid is for a 16 seer select carrier with a 80% select natural gas furnace and free evaporator coil. This can take two days to complete. This bid is only good for 30 days. This system will have a ten year parts warranty and a one year craftsmanship warranty. If you have any questions please contact us and we will do

Near Jordan Cir, Norman, OK 73071
Kianoosh M.

Kianoosh M.

Silver club dual AC and Heating preventative maintenance visit on silver club member Carrier system. Asked about hot and cold spots and other than upstairs, which has never kept up, everything is doing well. Washed condenser thoroughly. Checked dual capacitor and contactor. Checked blower, control board, evaporator coil and float switch. While inspecting drain line, I detected a light natural gas odor in closet with Hot water tank and furnace. After checking all accessible fittings in closet and in return plenum cavity over with soap bubbles, and testing fittings for tightness I could not detect the leak, but could still sell it every minute and a half or so. Recommend having ONG come out and test the system for leaks, as it may be a leak deeper in. They will do a complimentary inspection. ONG contact number 800-664-5463 customer called ONG and they arrived while finishing tune up and found the leak and fixed it. Cycled system in cooling and tested amps, volts, refrigerant pressur

Near Montrose Cir, Norman, OK 73072
Kianoosh M.

Kianoosh M.

Blue shield protection plan summer ac tune up. Asked customer how home has been cooling and about filters. Left fresh 12x24 and 14x24 filters with plan. Home has been cooling well. Washed condenser and checked dual capacitor and contactor. Contactor is starting to show signs of wear on contact points. Checked blower, blower cabinet and flue. Checked evaporator coil, condensate line and float switch. Cycled system on and checked blower amps in high and low speeds. Checked fan ad compressor amps and checked volts. Checked refrigerant pressure and outside delta temperatures. System is running well at this time. Spoke with customer about contactor and she will wait till next year to possibly have it replaced under warranty. Left estimate for contactor.

Near Oakmeadows Dr, Norman, OK 73071
Kianoosh M.

Kianoosh M.

Silver Club AC tune up on 2016 Carrier split system. Asked customer about filters and they have recently changed them. Home has been keeping cool as well. Asked about hot water tank and it has been working well. Performing Social Distancng tune up today. Washed condenser thoroughly, checked dual capacitor and contactor. Checked blower, blower capacitor and control board. Checked flue. Checked float switch, drain line and evaporator coil. Cycled system in and checked amps, volts and refrigerant pressure via sub cooling. Checked outside delta temperatures. System is working great at this time!

Near Bald Eagle Dr, Norman, OK 73072
Kianoosh M.

Kianoosh M.

Remediation for mouse carcass removal and video inspection. After speaking with customer, strongest smell was coming from front living area 2 supply vents in floor. After a quick inspection, found the mouse just past Wye joint connecting each supply vent. With customer permission, cleaned out carcass with shop vac and camera. Also used duct scope to locate a disjointed piece of ductwork under Hume next supply plenum. Left quotes with customer to repair and seal the disjointed ductwork if it is accessible after an access door is cut into closet by customer. Also left quote to duct clean ductwork after repair is made and install a germicidal UVC / UVV lamp. Will have office call to schedule a time to come out and do work. Customer is also going to email floorplan to get an estimate for a ductless or ducted minisplit.

Near Grover Ln, Norman, OK 73069
Kianoosh M.

Kianoosh M.

Furnace Silver Club member furnace tune up on 2014 Carrier 80% gas furnace. Customer does a great job changing filters. Home has done a great job staying cool this summer. Inspected flue, hot water tank and air conditioner surge protector. HWT is a 1994 install unit and I could tell it is about 30% full of sediment at the bottom. Talked to customer about our services to replace the existing tank with a skinny tank to fit in its place, if the time comes up to replace it. Since it has never been flushed to customer’s knowledge and is in Norman water supply, I do not recommend flushing this tank to try to get more life out of it. I recommend waiting until there is a need to replace it, then we can more than likely provide a same day replacement option, or refer a plumbing company if the customer chooses to go with a tankless replacement option. Also spoke with customer about having a furnace surge protector installed and customer will speak with wife about having it done. Inspected f

Near Waterfront Dr, Norman, OK 73071
Joseph K.

Joseph K.

I arrived for a gold member ac pm. I first spoke with the homeowner and they had a issue with the system leaking. I first inspected the indoor system and the evaporator coil and found no issues. I checked the drain line and found resistance in the drain line that leads into the dry wall. I blew the drain line out with nitrogen. I suspect that there is a built in p-trap inside the wall that connects to the plumbing. I think that this drain line is hard piped into the plumbing of the home. I cannot confirm this with out removing the dry wall. I recommend to have a plumber run a drain line into the furnace closet and install a p-trap in the closet for easy maintenance. I noticed that the supply vents to have some large debris in the grills. I recommend to have a duct cleaning to clean the grills and to remove any debris in the duct work. Overall this system is running properly at this time.

Near Oakhollow Dr, Norman, OK 73071
Joseph K.

Joseph K.

I arrived for a silver member ac and heat tune up. I first inspected the indoor system and checked all electrical components and found no major issues at this time. I then inspected the condenser and found the capacitor to be out of manufacture range of operation. I checked the contactor and found it to start to discolor but is in fair working condition. I then inspected the condenser and found it to be completely stopped up with heavy debris. I made the homeowner aware of all the issues I found and we decided to just clean the system and leave the system running as is. I completely disassembled the condenser and cleaned the condenser coil. I reassembled the condenser and tested the systems operation. I found the system to run in the same condition with the out of range parts with the system cleaned. This system is running at this time with weak components. If you have any issues with this system we will be happy to help you in anyway possible. Jake Kring.

Near Chambers St, Norman, OK 73071
Joseph K.

Joseph K.

I arrived for a silver member ac and heat pm. I first inspected the indoor system and cycled the electric heat on. I checked all heat strips and amps on the blower motor. I then cycled the ac on and checked the systems electrical components. I found the contactor to be black with carbon buildup in the contacts and it’s starting to pit. I recommended to install a surge protector to help limit the arcing on the contactor. We decided to let the system run for now. I then cycled the heat pump on and checked the temperature rise through the evaporator. Overall this system is running properly at this time.

Near SE 164th St, Norman, OK 73026
Brandon N.

Brandon N.

Performed silver club air conditioner maintenance. Customer changes filters regularly. Test capacitor and motor amp draw. Amp draw in range. Test compressor amp draw and condenser fan amp draw. Both are in range. Refrigerant levels appear to be in range for current temperatures. Evaporator coil is clean. Washed condenser. System is cooling at this time. Furnace is starting to get a little older but blower is working at this time.

Near Kensington Rd, Norman, OK 73072
Joseph K.

Joseph K.

Came out to call. Customer stated thermostat was blank. They replaced the batteries, checked breakers and power to the unit. The thermostat came on after they replaced the batteries, but the system still wasn’t operating. I checked system over and found the resetable fuse tripped. I reset it and turned power on. The control board lit up for a few seconds and then the fuse tripped again. I checked wiring and thermostat. Thermostat was fine and wiring to it was good. We installed a UVC lamp in January, and it’s 24v I checked and took wires out of circuit and the system functioned normal. There is a short in the UVC component and it’s tripping the fuse. I will discuss with my manager about replacement, and warranty of UVC system. Jake Kring. I arrived to replace a Max 25 UV light that is under warranty. I remove the old 24V systems and installed a 110V system and left the unit on and working properly at this time.

Near Lynnwood Cir, Norman, OK 73072
Kianoosh M.

Kianoosh M.

Blue Shield protection plan air handler heating tune up. Customer just changed filters, left 1-16x20 filter with customer, did not have 20x20 in stock. Checked evaporator coil and drain pan, unit and therefore drain pan was not leveled and had backed up a little. Readjusted drain pan to flow better, but it is still leaning away from the drain on the right side. Checked blower, capacitor, heat strips and breakers. Turned system on and checked heat, inside delta t and thermostat operation. System is running in manufacturer specifications at this time.

Near 192nd Ave SE, Norman, OK 73026
Kianoosh M.

Kianoosh M.

Blue shield protection plan Air handler tune up on manufactured home. Asked about filters and they had just been changed, left 1 20x20 and 1 16x20 filter with blue SPP. Checked heat strips and breakers. Checked blower and blower capacitor. Blower wheel has some residual buildup and could use a cleaning with removal. Checked thermostat operation, drain line, evaporator coil and amp draws. System is working in manufacturer specifications.

Near 192nd Ave SE, Norman, OK 73026
ISAAC J.

ISAAC J.

Performed preventative maintenance on Air handler for heating service. I cleaned the washable filters. Inspected evaporator coil, drain, blower assembly, electrical components, and heating elements. There is a significant amount of build up on the blower wheel that could effect how the system operates. It needs to be cleaned. The evaporator coil also could use cleaning, but it’s not as bad as the blower wheel. Customer chose to do blower wheel cleaning this service and will most likely do the evaporator coil on the next. I took blower assembly out, and disassembled it. Cleaned the blower wheel thoroughly, and reinstalled it. Put blower assembly back together and put it back in the air handler. Checked thermostat operation, wiring, capacitor, heating elements, amps, temperatures and overall operation of equipment. System is heating properly within manufactured specifications at this time.

Near Walnut Ridge Rd, Norman, OK 73026
Brandon N.

Brandon N.

Performed silver club furnace maintenance. Furnace getting older but in working order. Visually checked heat exchanger no issues found at this time. Replace customer supplied filter. Test igniter. Cleaned flame sensor. Test capacitor and motor amp draw. Capacitor and amp draw in range. Adjusted gas pressure. Heat rise in range. Test induced draft motor. System is heating at this time. Cycled air conditioner system is cooling at this time as well.

Near Kingston Rd, Norman, OK 73071
ISAAC J.

ISAAC J.

Came out to call. Blower motor wasn’t functioning properly. Unit has bad ecm motor relay. Parts house closed will get pricing and availability tomorrow. 9-14-2020 Came out to replace fan relay for blower motor. Fan was running when I showed up and wasn’t shutting off. I replaced fan relay inside of air handler. Wired it up according to diagram and fastened it back into place. Cycled system on and off to ensure new part is functioning properly.

Near E Lindsey St, Norman, OK 73026
ISAAC J.

ISAAC J.

Performed preventative maintenance on Trane furnace. Customer already changed filter recently. I inspected the blower assembly, electrical components, heat exchanger, burners, flame sensors, hot surface ignitor, safety switches and overall condition of equipment. Heat exchanger has some significant wear, but I was not able to find any cracks at this time. I cleaned the flame sensor and dust off of burners. Checked thermostat operation, amps, temperature rise and gas pressure. System is heating properly within manufactured specifications at this time. Customer is aware furnace is older and the condition of it is wearing down. We will continue to monitor the heat exchanger.

Near Eaton Dr, Norman, OK 73072