Wall Geothermal
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Wall Geothermal
Wall Geothermal is a licensed, bonded, and insured geothermal heating and air conditioning contractor in the State of Oklahoma. We offer residential and commercial geothermal system sales and service, including diagnosis and resolution of problem jobs. Wall Geothermal provides design engineering, project management, and turnkey geothermal installations.

Our primary area for service calls is in Oklahoma City and any area within 1 hour drive of Oklahoma City. We will install geothermal systems anywhere in the State of Oklahoma. Wall Geothermal owner Doug Wall graduated with a Bachelor of Science degree in Mechanical Engineering from the University of Tulsa in 1986.
Services
Wall Geothermal offers the design, installation, commissioning, and servicing of residential and commercial geothermal heating and cooling systems, whether those systems are for new construction and for the replacement of existing equipment.

Design includes surveying the site, sizing the loop based on heating and cooling loads, selecting equipment, sizing water pumps, and verifying that simulated loop temperatures are within an acceptable range for energy efficiency and freeze protection.Installation includes setting the units, and putting in ductwork, plumbing, and electrical service.
In addition to any available rebates, taxpayers may also claim a percentage credit of qualified expenditures for a geothermal system that serves a dwelling unit. The residence must be located in the United States, owned by the taxpayer, and used as a residence by the taxpayer. The home does not have to be the taxpayer's principal residence.
Reviews (6)
Carmen Crafton
Carmen Crafton
Mar 26, 2021
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I didn't know who to call to fix our aircondicioner, it's geothermal and l don't know much about it, especially who to call for. I just went on line and called wall geothermal because it looked like they were close to me, had to take a chance, my aircondicioner was not working on the hot summer. Glad l did, they are very professional and did a great job, Doug is very knowledgeable and answered all my questions
Dan Boyd
Dan Boyd
Dec 12, 2020
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Doug did an excellent job correcting installation issues with our geothermal unit and replacing a fused switch. He was very careful and kept us appraised of what he was finding as he went. We were really appreciative of his staying much longer than he thought he would have to and explaining all of the ins and outs involved with our system.
Brad & Marie New
Brad & Marie New
May 07, 2020
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Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
We had our geothermal unit replaced with a new one and Doug and his team were great. A very good experience and value. He even loaned us some portable air coolers to use while our new system was being ordered and installed.
Michael Atchley
Michael Atchley
Nov 04, 2019
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Our experience with Wall Geothermal was very satisfying. We upgraded from the typical air-to-air heat pump to geothermal. At all points in the process, Doug communicated well and appropriately, and arrived when expected. He is very knowledgeable, did much of the work himself, and did not cut corners. Once he was working on-site, he kept at it, pulling long days, minimizing the time we were without heat/air. He also corrected some ducting problems he found during installation. I highly recommend Wall Geothermal.
LeighAnn Barr
LeighAnn Barr
May 22, 2019
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I bought a home with existing Geothermal unit that was quite aged. Mr. Wall has been providing reliable service to try to get as much mileage out of the unit as possible. Finally had to replace it last month. Mr. Wall is, in my experience, the most conscientious person I've ever gotten to work with. His work is meticulous! I have full confidence working with Wall Geothermal. And my new unit is super quiet. I'm very pleased!
Greg Allen
Greg Allen
May 21, 2019
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Very professional and meticulous attention to details. Was here at exact time scheduled. Extremely knowledgeable about equipment. Made suggestions pertaining to maintenance items and increased efficiency of unit. Pointed out items to improve monitoring and safety of equipment operation. Exceptionally detailed and clean in all service work performed. Highly recommend for anyone with ground source system.