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.

The average cost for an HVAC repair is around $350-$600 in Norman, OK. Although, the cost of the repair can vary due to the type of repair, the level of the repair and the cost for replacement parts. A refrigerant leak repair can cost up to $1,200 depending on the type of refrigerant your HVAC system uses and how severe the leak is. If your HVAC system uses R22, the repair cost will be higher since R22 has been discontinued and is more expensive to obtain. To get your HVAC system repaired, give us a call today.  

Local Reviews
for Norman, OK

Interstate Heating & Air Conditioning Rated 4.9 out of 5 stars based on 186 customer reviews


Fast, expert service




Review of Interstate Heating & Air Conditioning

Issac took less than 10 minutes to discover why the humidifier on my furnace had been pouring water all over the garage floor. A previous service person had put everything in upside down. Issac fixed it, and then checked it extensively to make sure there would be no more leaks. Great service by Interstate, and by Issac!


Love this company!




Review of Interstate Heating & Air Conditioning

Jake came to fix our furnace. He was professional, courteous, and was willing to take the time to explain the problem to me. Would recommend him, or this company to anybody!


Great office staff and Service Tech




Review of Interstate Heating & Air Conditioning

office staff was friendly and professional over the phone, the service tech was polite, informative and professional


Isaac ... excellent HVAC technician




Review of Interstate Heating & Air Conditioning

Isaac was extremely courteous and professional for our HVAC maintenance visit. I had some questions about our heating system and I appreciated his responses.


Issac James




Review of Interstate Heating & Air Conditioning

Nice young man.


Quick great service




Review of Interstate Heating & Air Conditioning

Very good


Jason with Interstate H&S




Review of Interstate Heating & Air Conditioning

Jason was prompt and professional. He willingly worked beyond expected time and tasks to be sure the job was completed.


GreT service




Review of Interstate Heating & Air Conditioning

Prompt professional clean


Helpful technician




Review of Interstate Heating & Air Conditioning


Handled appointment very professionally




Review of Interstate Heating & Air Conditioning


Perfect experience




Review of Interstate Heating & Air Conditioning

Isaac was perfect. It was expensive, but I know that he is not responsible for the cost. He was good with the dogs, went above and beyond by taking my trash out.


Quick and efficient.




Review of Interstate Heating & Air Conditioning

Did a quality job.


Excellent and honest.




Review of Interstate Heating & Air Conditioning

Straight forward.


Great service




Review of Interstate Heating & Air Conditioning


Issac James service today was super.




Review of Interstate Heating & Air Conditioning

Always pleasant and answers my questions. Gives me a good summary what he did and checked. Always pleased with him.


Ac out




Review of Interstate Heating & Air Conditioning

Great service thanks for being so fast


Customer




Review of Interstate Heating & Air Conditioning

Kianoosh was very professional acting and knowledgeable about the task he was performing. He was also very nice and pleasant to talk to.


Wonderful service! Very professional.




Review of Interstate Heating & Air Conditioning

Mike Tabor did a thorough inspection of our furnace and A/C unit. He found that everything was running smoothly and met standard qualifications. I did not have to pay any service charges or fees. Mike was very cordial and very professional. It was a pleasure to deal with him and with Interstate.


Great service




Review of Interstate Heating & Air Conditioning

Did an awesome and thorough job of cleaning dryer vents.


Yearly Tune-up with Isaac




Review of Interstate Heating & Air Conditioning

Isaac was his usual cheerful and professional self, accomplishing his task in an efficient and friendly manner. He is a great credit to Interstate Heating and Air.


Great service & was able to catch the mis-wiring of the capacitor




Review of Interstate Heating & Air Conditioning


Service




Review of Interstate Heating & Air Conditioning

As always, very happy with your professional experience.👍👍


Jake was great!




Review of Interstate Heating & Air Conditioning


Great technician




Review of Interstate Heating & Air Conditioning


Experience is a great Tool




Review of Interstate Heating & Air Conditioning

Rod arrived the same day after my morning request. He listened to my concerns and asked relevant questions. He quickly reached a hypothesis and proceeded to immediately check it out. As he had speculated, our AC was low on freon. I went with him and watched him work. That was just out of curiosity, because I enjoy watching craftsmen do their trade. He explained various things to me as he worked, and I appreciated that. As we are Gold Members, his entire visit was paid for, and we had only to pay for a pound of freon. Considering the heat that we had been dealing with, that was a real bargain. I would estimate that Rod was here about 30 minutes, maybe a little more. He was working the entire time and knew exactly what he was doing. I appreciate Interstate and I appreciate Rod. It's good to work with someone who knows exactly what he is doing!


ISAAC J.

ISAAC J.

Came out to call for a humidifier issue. Customer stated that the humidifier was leaking after it had been looked at and the filter was changed. She had the humidifier off to keep it from leaking. I inspected the humidifier and found the filter pad upside down. This was causing the water to not fully saturate the filter pad and caused water to leak out the humidifier. I flipped the pad and cycled the humidifier on to check operation and had no issues with it leaking. This was something that could’ve been prevented and is on us for not installing the pad correctly. I did not charge the customer for this call, and apologized for the inconvenience. The humidifier is now operating properly.

Near Quail Hollow Dr, Norman, OK 73072
Kianoosh M.

Kianoosh M.

Silver club furnace tune up. Customer just changed filter. Talked about changing humidifier pad as well as flushing hot water tank with service today. Inspected flue, and found a lot of debris and sediment in inducer trap, vacuumed out with shop vac. Cleaned flame sensor. Checked inducer wiring and hoses. Checked evaporator coil, humidifier, and heat exchanger from below. Checked heat exchanger from above, blower and blower cabinet. Checked control board, cleaned burner compartment. Humidifier pad that I had needed to be cut to size, and stunted from below to fit. Spoke with customer about this and that work done would be under warranty, as it is currently draining properly. Finally cleaned all humidifier surfaces from buildup. Also oiled fan blade and set it down shaft a small ways to remove noise. Flushed hwt, after shutting off water and gas valve. Cycled system on and checked gas pressures, heat rise, amps and static pressure. After tank finished draining, reset gas valve, and test

Near War Bird Dr, Norman, OK 73071
Joseph K.

Joseph K.

I arrived for a no heat call on a system we recently installed. I inspected the system and found that we ran heat tape and insulated the drain line but we did not insulate or put heat tape on the furnace p-trap. I wrapped the p-trap in heat tape and left it ready to be plugged in. The plug was burnt and I did not want to damage the heat tape. The homeowner is aware of the issue and will plug the heat tape in when it is needed.

Near Lett Cir, Norman, OK 74857
Joseph K.

Joseph K.

I arrived for a warranty install no heat call. I inspected the system and found the trap on the system to have not been insulated when installed. I installed the insulation on the p-trap on the furnace and melted all ice in that section. Once the ice was melted the system came on and cycled on on its own and ran with no other issues at this time. The last 10’ of drain line is in the wall of the water heater closet. If this line freezes we I’ll have to run new drain line and insulate and run heat tape. This will be a chargeable task because this line was only accessible when the house was being built.

Near Truffula Cir, Norman, OK 73069
rodneys@interstateheatandair.com

rodneys@interstateheatandair.com

Silver club fall service. Replaced filters that homeowner provided. Blower motor is ECM, run capacitor not required, motor and wheel are clean, hot surface ignitor checked, cleaned and checked flame sensor, pressure switches (2) checked good, inducer motor run load amps are good, roll out switches checked good, high limit switch checked good, manifold pressure is 3.51 in wc, within mfg specs, cycled system with tstat, tstat and system are operating normally. Conducted carbon monoxide test—0ppm

Near Lochinver Dr, Norman, OK 73069
rodneys@interstateheatandair.com

rodneys@interstateheatandair.com

Arrived a no heat issue. Evaluated system and found board locked out on over heat, control board not turning blower on. With homeowner ok I replaced control board. Checked system operation, system operating normally. Cleaned flame sensor, hot surface ignitor checked good, pressure checked good, inducer motor run load amps are good.. Enrolled homeowner in a Blue Shield maintenance agreement.

Near Chamberlyne Way, Norman, OK 73072
ISAAC J.

ISAAC J.

Performed preventative maintenance on furnace at this location. Changed out filters for customer. Inspected the blower assembly, motor, electrical components, heat exchanger, burners, flame sensor, igniter, inducer motor, heat drains and overall condition of equipment. Cleaned flame sensor and heating drains. Checked thermostat operation, wiring, amps, temperatures and gas pressure. Made customer aware of noise I heard on start up with the inducer motor. It stopped making it after the second heat cycle, and the amps were still within range. Told customer it should be fine, but if by chance it doesn’t last through the season that we would discuss repair vs replacement.

Near Reginald Dr, Norman, OK 73072
Kianoosh M.

Kianoosh M.

Clean 2 returns and 6 supplies between 2 units 11&12. Unit 12 return will need a level 2 cleaning.

Near Crown Point Ave, Norman, OK 73072
ISAAC J.

ISAAC J.

Performed preventative maintenance on furnace. Changed out filters for customer. Inspected the blower assembly, motor, electrical components, heat exchanger, burners, flame sensor, igniter, inducer motor and overall condition of equipment. Checked thermostat operation, wiring, amps, temperatures and gas pressure. System is heating properly within manufacturing specifications given the age of it.

Near Lorings Rd, Norman, OK 73072
rodneys@interstateheatandair.com

rodneys@interstateheatandair.com

1-10-2022. No heat. System locking out on pressure switch fault. Inducer maintaining 1.2 in wc, required is .75 in wc condensate drain is clear, could be pressure switches or control board I have ordered both. 1-12-2022. Returned with control board because carrier did not order pressure switch assembly. Installed new control board and still have same issue. Disassembled all condensate drains on unit to insure all are clear and draining, all are. I tried universal pressure switch same issue. Will wait for pressure switch assembly to arrive. At homeowners request I replaced tstat and enrolled homeowner in a blue shield agreement.

Near E Lindsey St, Norman, OK 73026
Kianoosh M.

Kianoosh M.

Duct cleaning estimate for side by side town homes units 11&12. Unit 11 is vacant and unit 12 is occupied. Can clean mat if the units with level 1 cleaning. Will need to clean occupied unit 12 return cavity with a level 2 cleaning. Will include hospital grade disinfectant spray with cleanings. Left estimate with office manager to send up the line for approval, will schedule with office to come back once work is approved.

Near Crown Point Ave, Norman, OK 73072
ISAAC J.

ISAAC J.

Performed preventative maintenance on furnace. Customer stated that he would change out the filters. I inspected the blower, motor, electrical components, heat exchanger, evaporator coil, burners, flame sensor, igniter, inducer motor and overall condition of equipment. Cleaned flame sensor and dust off the burners and components. Evaporator coil is starting to accumulate some build up on it. Customer is aware and wanted to revisit cleaning it when it gets time for the next service. I checked the thermostat operation, wiring, amps, temperatures and gas pressure of the system. Adjusted gas pressure and tested safety switches. Furnace is almost 22 years old, but as of right now has no signs of cracks in the heat exchanger. I did recommend customer plan to replace it sooner than later due to efficiency and age.

Near Kensington Rd, Norman, OK 73072
ISAAC J.

ISAAC J.

Heat system repair - Came out to clean electrostatic filters for customer.

Near Elm Ave, Norman, OK 73069
Jason B.

Jason B.

07JAN2022 Jason B arrived for no heat. Spoke with James about what happened had alarm company out that installed a nest thermostat, thermostat could not communicate with equipment and showing RC terminal not connected. Checked wiring at the thermostat, checked the wiring at the furnace. Found fuse blown at furnace. Inspected thermostat wire for any cracks cuts or tears. Replaced fuse and checked nest. Found thermostat set up for electrical heat instead of gas. Programed stat for 2 stage heat, and 2 stage cooling. Cycled system on in all stages. Buttoned up furnace. System is running properly at this time. We are waiting to collect as Mr. Hirst is forwarding bill to alarm company.

Near Alameda Plaza, Norman, OK 73071
Joseph K.

Joseph K.

I arrived for a club member fall maintenance. I first spoke with the homeowner and he showed me both systems. I inspect the upstairs system first and found the capacitor on the blower motor to be weak but still operating. I also found the downstairs furnace to be shutting off on its main limit shortly after its running. I inspected the heat exchanger and found a lot of heat stress on the heat exchanger at this time but I did not find any cracks or CO readings at this time. I made this aware to the homeowner and I reconnected to replace the downstairs system due to us starting to replace parts on this system fairly often and the system having a lot of stress to the furnace. We decided to just replace the high limit and the capacitor for the upstairs blower motor at this time.

Near Magnolia St, Norman, OK 73072
ISAAC J.

ISAAC J.

Came out to call for a second opinion on a heat exchanger. Customer was told that his heat exchanger has a crack in it and needs to be replaced. He was shown carbon monoxide readings of around 12-15 ppm. I opened the system completely and let my carbon monoxide meter sit close to the unit and let the furnace run for 8-10 minutes and had a reading of 0. Visually checked the heat exchanger and found no signs of cracks on the heat exchanger. The unit is just under ten years old and is in really good condition for the most part. I also checked the flue pipe for gaps and found nothin concerning. I do recommend having carbon monoxide detectors installed closer to the ground in the home, just to be safe.

Near Rivermont Ct, Norman, OK 73072
Kianoosh M.

Kianoosh M.

Silver club ac tune up on condo air handler and heat pump. Customer just changed filter, takes about different filter types with customer. Checked air handler, electrical and capacitor. Tested unit in emergency heat, tested heat strips and blower amps. Tested in cooling and heat pump modes. Tested reversing valve operation, outside board, outside capacitor and fan and compressor amps. Capacitor is just barely reading in range on the compressor side. Attached gauges, but struggled to get an accurate reading in the low ambient temps. Inside delta t was 15 degrees in heating heat pump mode and 23 degrees with electrical heat strips. Everything is functioning well at this time!

Near Classen Blvd, Norman, OK 73071
Joseph K.

Joseph K.

I arrived for a new customer no heat call. I inspected two hanging furnaces and found the induced draft motor to be put on one system and the pressure switch to be put on the back system. I will be calling the manufacture to find the parts needed and I will be in contact with the company about availability. Parts will not be here till after Jan 25th

Near N Flood Ave, Norman, OK 73069
ISAAC J.

ISAAC J.

Performed preventative maintenance on the furnace for customer. Customer changed out the filters recently. I inspected the blower assembly, motor, electrical components, burners, flame sensor, igniter, inducer motor, heat drains and overall condition of equipment. Cleaned flame sensor and dust off the burners and components. Checked system operation, wiring, amps, temperatures and gas pressure. System is heating properly within manufacturing specifications at this time.

Near Golden Oaks Dr, Norman, OK 73072
Joseph K.

Joseph K.

I arrived for a gold member no heat call. I inspected the system and found the system to be running then shutting off on overload. I found the cause of the problem to be a stopped up blower housing and a dirty evaporator coil. The homeowner is also running two merv 13 filters in the filter base. I instructed to only place one filter on the system and we needed to clean the blower housing and evaporator cool. The homeowner only wants to clean the blower housing at this time. I recommend to do a minor or major evaporator coil cleaning. I removed the blower housing and separated the motor, squirrel cage and all brackets. I hand brushed the motor and washed the squirrel cage and housing down with a brush and water hose. I then reassembled the system cycled the system on and left it running with a stopped up evaporator coil at this time. The homeowner want us to call back Monday to schedule a time to come and remove the evaporator coil and clean the coil.

Near 48th Ave NE, Norman, OK 73026
Jason B.

Jason B.

at the base of the coil to tap a 4” duct and run it up and into the desired room. 4” flex x3 4” Cody x1 4x6x6 boot x1 6x6 vent x1 4” finger saver SC x1 4” elbow x2

Near Chatham Ct, Norman, OK 73072
Joseph K.

Joseph K.

I arrived to disconnect a package unit let the roofer seal the electrical coming out from the bottom on the plenum riser and I reattach the package unit. I disconnected electrical and low voltage wiring. I then disconnected the gas and the plenums. I cleaned the old mastic off both plenums and package unit and. I then let the roofer clean and seal the electrical penetration. I they then put the package unit back in place and I reattached the plenums and sealed all sides on both the return and supply with outdoor duct mastic. I then reattached the gas line and all electrical. Once the was finished with the system I cycled the furnace on at the package unit and the air conditioning on at the package unit and found it to respond to the commands given. I then left the system running in heat mode with the call from the thermostat. It will take at least a day for the sealant to cure and form a prop water seal.

Near W Main St, Norman, OK 73069
rodneys@interstateheatandair.com

rodneys@interstateheatandair.com

Blue shield fall service. Replaced filter, blower motor run capacitor checked good, motor and wheel are clean, hot surface ignitor checked good, cleaned and checked flame sensor, pressure switch checked good, inducer motor run load amps are good, manifold pressure is 3.5 in wc, within mfg specs, roll out switches checked good, high limit switch checked good. Cycled system with tstat, tstat and system operating normally. Conducted carbon monoxide test—0ppm. Replaced batteries in homeowner carbon monoxide detector, detector tested good. Cleaned return air grill.

Near Pecan Ave, Norman, OK 73072
rodneys@interstateheatandair.com

rodneys@interstateheatandair.com

Blue shield fall service, filters recently changed, left 2 replacement filters, blower motor is constant torque, no run capacitor required, hot surface ignitor checked good, cleaned and checked flame sensor, pressure checked good, inducer motor run load amps are good, roll out switches (2) checked good, high limit switch checked good, adjusted manifold pressure from 4.1 in wc to 3.5 in wc, now within mfg specs. Cycled system with tstat, tstat and system are operating normally. Conducted carbon monoxide test—0ppm

Near Briarcreek, Norman, OK 73071
Joseph K.

Joseph K.

I arrived for a club member fall maintenance. I first spoke with the homeowner and found that the access door that leads under her home has fallen off. I put the door back on and replaced the screws to the door. We then gained access to the furnace and I replaced the filter for the homeowner. I then inspected the furnace and foot to be running properly at this time.

Near Vine St, Norman, OK 73072