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.

Local Reviews
for Norman, OK

Interstate Heating & Air Conditioning Rated 4.9 out of 5 stars based on 94 customer reviews


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


Awesome service




Review of Interstate Heating & Air Conditioning

We had an installation of a new system scheduled for Monday and had a question on Sunday. We called on Sunday and they called within 30 minutes to address our question. It was answered and taken care of immediately. The technicians were so courteous and completed the job quickly. I would recommend them to anyone.


Great service as usual!




Review of Interstate Heating & Air Conditioning


Amazing service




Review of Interstate Heating & Air Conditioning

Adam was great! He was able to figure out everything that was wrong with our system quickly, and he explained it in a way that made sense to us. He was not pushy and gave us several options to fix our cooling system.


A/C Check-up




Review of Interstate Heating & Air Conditioning

Isaac was professional, knowledgeable, and thorough. He discovered a bad capacitor, got it replaced, tested the unit and answered all my questions. Thanks Isaac!!


HVAC system replacement




Review of Interstate Heating & Air Conditioning

The work was quickly and professionally done. Explanations were accurate and appreciated. Clean up, well, you couldn’t even tell they had been there when they were done. Great job!!


Excellent service as always.




Review of Interstate Heating & Air Conditioning


Great Service!




Review of Interstate Heating & Air Conditioning


Awesome technician!!




Review of Interstate Heating & Air Conditioning

This was the first time Brandon came out to do our regular maintenance and he was great! Checked everything and changed our filters. He was professional and efficient. Very nice too!


Excellent Installation




Review of Interstate Heating & Air Conditioning

I received quotes from three local HVAC companies, and Interstate was the only dealer who took the time to explain why they were proposing their system, and the different between the various systems. They were a bit higher, but they were more interested in doing the job correctly than lowballing it. Install took two days as predicted, and sales rep and installers were great to work with.


Typical friendly professional service.




Review of Interstate Heating & Air Conditioning


Great first experience!




Review of Interstate Heating & Air Conditioning

Tech showed up ahead of scheduled time and called to confirm, very different experience from other companies I’ve used who are always very late. Problem was diagnosed quickly, price quoted up front, and repair made in a timely manner. Service tech was courteous and answered all my questions. Highly recommend Interstate!!!


Great Service




Review of Interstate Heating & Air Conditioning

the team came on time and provided their service in a very professional matter.


Great service.




Review of Interstate Heating & Air Conditioning

Prompt, knowledgeable, friendly, and did an excellent job.


great service




Review of Interstate Heating & Air Conditioning


Brandon N.

Brandon N.

Perform silver club air conditioner maintenance. Washed condenser. Refrigerant levels are in range. Changed filters. Test capacitor and motor amp draw. Test compressor amp draw. Coils are clean. Surge protectors are in working order. System is cooling as designed at this time.

Near Hatterly Ln, Norman, OK 73072
Brandon N.

Brandon N.

Performed silver club air conditioner maintenance. Washed condenser. Changed customer supplied filters. Test motor and capacitor. Test compressor. Amp draw and refrigerant in range. System is cooling at this time. Customer had pan treatment due to be changed. Customer chose to replace pan treatment.

Near Classen Blvd, Norman, OK 73071
Brandon N.

Brandon N.

Perform silver club air conditioner maintenance. Changed customer supplied filters. Test capacitor and motor amp draw. Washed condenser and tested compressor amp draw. Compressor amp draw is elevated but working at this time. Tested refrigerant levels they are in range. System is cooling at this time.

Near Benny Bruce St, Norman, OK 73026
Brandon N.

Brandon N.

Arrived to service call on minisplit performed evaluation. Found condenser coil extremely dirty and inside unit frozen solid. Suggested tune up to customer. Customer had tune up performed. Cleaned filters and condenser coil. There is some ice on back of inside unit that cannot be reached and only time will thaw this area. Collected service fee and tuneup. Informed customer to let unit thaw and run system after unit thaws. Customer going to let thaw out over night and turn on system in morning. If unit doesn’t work correctly customer will have us come back out.

Near Hollywood Ave, Norman, OK 73072
ISAAC J.

ISAAC J.

Came out to call. Customer said system was tripping the breaker every so often, and it’s warm to the touch. I checked system over and found it to be working properly. Starting amps on compressor are high. Compressor is struggling a little when coming on. I suggested a hard start kit to help compressor on start up. Customer had me install it. I also s recommended having the breaker be changed to 40 amp instead of 30. It’s what is required for the system.

Near Brownwood Ln, Norman, OK 73072
Joseph K.

Joseph K.

I arrived for a silver summer no cool call. I first spoke with the homeowner and the main issue was it’s hard to see the thermostat and see what it is set on. I inspected the thermostat and found the batteries in the thermostat to be weak and failing. I replaced the batteries with ones the homeowner provided and the thermostat came on and the system started cooling. I inspected the indoor system and the outs system and found no issues with the systems operation. I cleaned the conditioner and check the systems refegerant charge and found it to be rusted per manufacture specification. I’m placing job on hold having trouble with cost on ticket. Customer payed in full.

Near Cheyenne Way, Norman, OK 73071
ISAAC J.

ISAAC J.

Came out to call. Customer said system wasn’t cooling and water was leaking on the floor where the furnace and evaporator coil were located. I checked system over and found the floor to be damp. The drain line is a strait run to the sewer line and it wasn’t backed up. I checked AC and found the pressures to be low, indicating the system needs refrigerant. The system ran too long without the proper charge and froze up to the point were it was overflowing with water after they had shut it off. I discussed with customer about options. She approved charging the system for now and then getting the system checked for a leak at a later date if needed. I charged the system with 1.9lbs of 410a to get proper superheat. Customer was also due for a service. I washed the condenser. Checked thermostat operation, wiring, capacitor, contactor, compressor, fan motors and overall condition of system. AC is cooling properly within manufactured specifications at this time.

Near Elk Horn Rd, Norman, OK 73071
Joseph K.

Joseph K.

I arrived for a non member no cool call. I first inspected the system and found the evaporator coil to be frozen over. I defrosted the ice with the furniture and charge the evaporator coil and found it oil on the front of the coil. I made the homeowner aware of the issue and we decide to charge the system at this time and see how the system is operates. I clean the conditioner coils and add refrigerant to the system and set the subcooling at 7.8 deg. The systems calls for 8 deg subcooling. We decide to side up on a red maintenance plan to keep the system clean in in good runs condition at this time.

Near Alpine Dr, Norman, OK 73072
Joseph K.

Joseph K.

I arrived for a white club preventative ac pm. I first spoke with the homeowner and found the main concern to be the filters are dirty and they have power issues. I cleaned the washable filter and reconnected to have the small filter replaced with a washable filter. I also recommend to have surge protectors installed on the system to help prevent any power issues that they might have in the future. I then inspect the indoor furnace located in the attic and found no major issues. I then inspected and clean the condenser and washable filter. I check all electrical components in the system and found no major issues at this time. Overall this system is working to the best of its abilities at this time.

Near Truffula Cir, Norman, OK 73069
Brandon N.

Brandon N.

Perform white shield protection plan air conditioner maintenance. Changed 20x30 filter. Blower and evaporator are clean. Test capacitor and motor amp draw. Test compressor amp draw. Refrigerant levels are in range. Washed condenser. System is cooling as designed at this time. Ecm motor amp draw in range.

Near Cavecreek St, Norman, OK 73071
Kianoosh M.

Kianoosh M.

Install backordered attic ventilation dampers in both 14 inch whirlybirds on 9/26/2020.

Near Prestwick St, Norman, OK 73072
Brandon N.

Brandon N.

Installed upper and lower combustion air pipe

Near Boyd St, Norman, OK 73071
ISAAC J.

ISAAC J.

Performed preventative maintenance on 4 systems. 3 systems are Carrier split systems and the other system is an LG mini split. I did a thorough inspection inspection of the split system equipment. I inspected the blower assemblies, electrical components, wiring, evaporator coils, drains, ducting, and overall condition of equipment. Customer said the system suppling the game room and master bedroom still doesn’t reach desired temperature like they would like it to. The added an additional attic fan and insulation as well. System is a tad undersized for the spaces it is supplying. Customer is aware the system is undersized and just wanted to make sure it was operating properly. I washed condenser coils thoroughly. I checked and tested thermostat operation, capacitors, contactors, compressors, fan motors, amps, temperatures and pressures of condensers. System supplying game room and master had a bad capacitor and so did the downstairs 5 ton system. I made homeowner aware of repairs need

Near Foxborough Ct, Norman, OK 73072
Joseph K.

Joseph K.

I arrived for a non member no cool call. I spoke with the homeowner and they just replaced the thermostat and main control board in the furnace. They also removed and cleaned the evaporator coil and blower motor housing and wheel. I found the Main control board to be miss wired and the thermostat to be internally shorted. I also found wire to be bare wire sitting on the furnace cabinet. I rewired the control board and recommended to replace the thermostat and contactor on the system. The homeowner owner is going to replacing the thermostat and contactor on their own. I started to check the systems refrigerant charge and the homeowner did not want the system checked at this time. He was in a hurry to meet family from out of town at this time. I left with the system not running due to the thermostat issue and the contactor issues on the condenser.

Near S Flood Ave, Norman, OK 73069
Joseph K.

Joseph K.

I arrived for a silver X2 maintenance. I first inspected the downstairs systems and found the filters to be dirty and in need of replacement. I replaced the filters that are included with the maintenance plan. I checked the evaporator coil and furnace and found no issues. I checked the condenser and found the condenser coil to be stopped up. I cleaned both condenser coils. I checked all electrical components in the condensers and found the contactor to start to blacken and pit on the downstairs system. I inspected the upstairs system and found the system to be running low on R22. I recommend to replace the contactor and preformed a leak search on the upstairs system. We decide to just add what refegerant was is need to get the upstairs system running at this time. I added 2LBS 8OZ of R22 to the system and lowered the system superheat from 46 to 15.4. The system calls for 16.7 deg superheat on a 76 deg day. Overall both systems are running to the best of there abilities at this time.

Near Castlewood Dr, Norman, OK 73072
Brandon N.

Brandon N.

Arrived to service call and performed system evaluation. Condenser from 1984 in fair condition. Found bad contactor switch, bad compressor capacitor, bad fan capacitor and bad hardstart kit. Spoke options with customer. Customer would like to try get a little longer out of condenser. With customer approval I installed new contactor switch, new capacitor and hardstart kit. Cycled unit multiple times. Amp draw in range. System is cooling at this time. Replace customer supplied filters. System is cooling at this time but do to age only suggest replacement be considered in future. 1Yr warranty on parts.

Near Huntington Way, Norman, OK 73069
ISAAC J.

ISAAC J.

Came out to call to perform a maintenance on the AC. Customer informed me that late last night the house seemed not as cool and the blower motor inside was constantly running, and the outside AC wasn’t on. I checked system over and found the contactor had burnt and shorted itself out. I discussed with customer about repair needed. Customer is no longer covered under parts and labor warranty as the terms have expired. I replaced contactor for customer and resumed with the service. I inspected the capacitor, compressor, fan motor and overall condition of AC. Checked thermostat operation, amps, temperatures and pressures of condenser. System was also a little low on refrigerant. Made homeowner aware of needed refrigerant. I added 1.1lb of R-22 to the system to get correct superheat. System is cooling properly within manufactured specifications at this time.

Near Shady Ln, Norman, OK 73069
Kianoosh M.

Kianoosh M.

Install 2 dampered attic whirlybirds

Near Prestwick St, Norman, OK 73072
ADAM R.

ADAM R.

I came out because a duct had come loose. The bottom left sticky back tap wasn’t screwed into the supply plenum and fell off. I restock and screwed the two in place. I checked the rest to make sure they were attached properly. All looks good.

Near Highland Ridge Dr, Norman, OK 73069
Jason B.

Jason B.

X13 single stage furnace 16 seer with full duct replacement

Near Highland Ridge Dr, Norman, OK 73069
ISAAC J.

ISAAC J.

Came out to call. Customer explained to me that the AC fan motor was going out. At one point it stopped spinning, and then another time it worked. I checked system over and found the condenser motor stuck and wouldn’t turn. The motor has locked up. I discussed with customer about repair needed, and he gave me the okay to replace the motor. I took the old motor off the system and installed the new 1/4 hp motor onto unit. I wired in new capacitor with motor as well. I cleaned up all the wiring with zip ties and washed the condenser coil thoroughly. Customer is due a service so I did a full maintenance on the system. Inspected blower assembly, electrical components, wiring, evaporator coil, drain, and overall condition of equipment in garage closet. Checked capacitor, contactor, compressor, amps, temperatures and pressures of condenser. System is cooling properly within manufactured specifications at this time.

Near 60th Ave SE, Norman, OK 73026
ISAAC J.

ISAAC J.

Performed preventative maintenance on AC system. Customer already changed filter recently. I did a thorough inspection of the equipment in the garage closet. Inspected the blower assembly, wiring, electrical components, evaporator coil, drain, and overall condition. Cleaned condenser coil thoroughly. Checked and tested thermostat operation, capacitor, contactor, compressor, fan motor, temperatures and pressures of condenser unit. System is cooling properly within manufactured specifications at this time. Discussed with customer about surge protection on AC and adding a humidifier later to help in the winter.

Near Natchez Dr, Norman, OK 73071
Joseph K.

Joseph K.

I arrived for a water issue. I first spoke with the tenant and the main issue was the system was frozen and leaking water. I first inspected the indoor system and found the evaporator coil to be clean and and the blower motor to be clean. I then inspected the system located on top of the two story building. I found the systems pressures to be low. I added refegerant and found the low side pressure to remain the same 82-85 “22-25 deg” psi for 410A. The head pressure rose to 505 psi 410A with only 12OZ of refegerant added. I removed refegerant until the system was running as I found it. I made this issue aware to the homeowner and explained that there is a restriction in this systems. I recommend to have the system repaired or to have the systems bid for replacement. We decided to let the system run and not look for the restricted component at this time.

Near River Oaks Dr, Norman, OK 73072
Kianoosh M.

Kianoosh M.

Came out to perform Silver Club AC on upstairs system, downstairs system was tuned up the previous day during a no cool call out. Asked about hot and cold spots and air filters. 14x 25 filter was recently changed. Upstairs Lennox condenser heavily clogged with cottonwood filaments. Washed condenser thoroughly. Checked blower, blower capacitor, fan and compressor capacitors and all are in range. Checked evap coil and drain line, And system is draining properly. Checked ductwork and return plenums on both systems, and home could use a duct cleaning at some point. Cycled system on and checked refrigerant pressure with outdoor delta t and amp draws. System is working great at this time. Talked with customer in depth about our IAQ products and sent them our informational video and brochures.

Near Meadow Ridge Cir, Norman, OK 73072
ADAM R.

ADAM R.

I came out for a no cool on the downstairs system. The if ac maintenance was due as well, so there’s no diagnostic fee. I washed the downstairs condenser coil. I checked the blower drain, evap coil, dual capacitor, filter, contactor and all wiring. The compressor side of the dual capacitor was at 0. I installed a new warranty capacitor. Cycled the ac and checked all operations and charge. All working well. The office will call in the morning to schedule time to return for the maintenance on the upstairs system.

Near Meadow Ridge Cir, Norman, OK 73072