KJ Thomas Mechanical has certified technicians to take care of your Furnace installation near Louisville CO.

Boulder

Your best choice for Furnace repair in Boulder, CO

Since 2007, KJ Thomas Mechanical is your best choice for repair, installation, and service in homes and buildings just like yours in the Boulder County. We take special pride in the craftsmen we train and employ--a fact you'll see in the reviews below. It's also noticeable immediately in the attitude and integrity our technicians bring to your job site. Our entire company works hard to make your experience with us hassle-free and enjoyable. You can also be assured that KJ Thomas Mechanical stands behind the work we do as well as complies with all local codes. This is why, as you can see by the map and reviews below, we are rated so highly for AC, Boiler, and Furnace Repair in Boulder, CO. Call us today at 303-435-8141!

Local reviews for AC, Boiler, and Furnace Repair in Boulder, CO.

Local Reviews
for Boulder, CO

Rated 5.0 out of 5 stars based on 11 customer reviews

Map of Boulder, CO

Boiler replacement




Quality work. Delivered on time. Great customer service


Map of Boulder, CO

Great service




Logs seemed very knowledgeable and was very honest.


Map of Boulder, CO

Quick Reasonable Knowledgable




Quick Reasonable Knowledgable - thank you for solving the problem we were having with our furnace. It is nice to have a reliable service in our area. Thank you!


Map of Boulder, CO

Great service




Karl is always great and does a very good job


Map of Boulder, CO

Excellent service




I would recommend this service. He came no time, serviced my furnace, water heater and humidifier in just a little over an hour. He seemed dedicated to his work. Friendly to my old dog.


Map of Boulder, CO

On time, courteous and efficient as always.




I am thankful to have found a company that I can completely rely on to take care of both my A/C and heating systems!


Map of Boulder, CO

Punctual





Map of Boulder, CO

Great customer service




New boiler installed promptly with great customer service in ordering and installation.


Map of Boulder, CO

Quick response and very experienced




Totally happy


Map of Boulder, CO

Prompt, professional service!!




I received very prompt service and was very happy to have my A/C restored, even though my furnace is antiquated! I was fortunate to receive a referral in an industry where it is hard to pick a professional.


on time and on budget, as a contractor, this is very important.




KJ Thomas Mechanical has, for over 20 years provided the utmost quality and service. As a contractor, I know that the workmanship meets or exceeds all current building codes.


Ken M.

Ken M.

Install laars boiler and hot water storage tank

Near Harvard Ln, Boulder, CO 80305
Boulder, CO - Install laars boiler and hot water storage tank
Ken M.

Ken M.

Install laars boiler and water storage tank

Near Harvard Ln, Boulder, CO 80305
Boulder, CO - Install laars boiler and water storage tank
Logan B.

Logan B.

Performed furnace maintenance on Trane unit

Near Boulder, CO 80303
Boulder, CO - Performed furnace maintenance on Trane unit
Logan B.

Logan B.

Performed furnace tuneup on Rheem unit

Near Boulder, CO 80303
Logan B.

Logan B.

Performed ductwork repair

Near Baca Cir, Boulder, CO 80301
Boulder, CO - Performed ductwork repair
Logan B.

Logan B.

Performed furnace tuneup on Rheem unit

Near 30th St, Boulder, CO 80301
Boulder, CO - Performed furnace tuneup on Rheem unit
Logan B.

Logan B.

Performed furnace tuneup on Armstrong unit

Near Spine Rd, Boulder, CO 80301
Logan B.

Logan B.

Performed furnace tuneup on Trane unit

Near Spine Rd, Boulder, CO 80301
Boulder, CO - Performed furnace tuneup on Trane unit
Carlos C.

Carlos C.

Performed furnace tune up on Rheem unit

Near Boulder, CO 80304
Ken M.

Ken M.

Relocate boiler flue

Near Arthur Ct, Boulder, CO 80304
Boulder, CO - Relocate boiler flue
Karl T.

Karl T.

Hybritherm boiler in floor heat system service

Near Champlain Dr, Boulder, CO 80301
Boulder, CO - Hybritherm boiler in floor heat system service
Tate N.

Tate N.

Installation of a new flu system for furnace and water heater.

Near Park Cir, Boulder, CO 80301
Boulder, CO - Installation of a new flu system for furnace and water heater.
Karl T.

Karl T.

Tune up Hybritherm boiler and install 2 Honeywell thermostats

Near 19th St, Boulder, CO 80302
Boulder, CO - Tune up Hybritherm boiler and install 2 Honeywell thermostats
Karl T.

Karl T.

Service and tune furnace, Trane humidifier, aprilaire filter.

Near Park Pl, Boulder, CO 80301
Boulder, CO - Service and tune furnace, Trane humidifier, aprilaire filter.
Karl T.

Karl T.

Heil furnace tune up

Near Endicott Dr, Boulder, CO 80305
Logan B.

Logan B.

Performed furnace tuneup on Rheem unit

Near Alberta Ct, Boulder, CO 80301
Logan B.

Logan B.

Performed AC maintenance on Carrier unit

Near Iris Ave, Boulder, CO 80304
Boulder, CO - Performed AC maintenance on Carrier unit
Logan B.

Logan B.

Performed furnace repair on Goodman unit

Near Iris Ave, Boulder, CO 80304
Boulder, CO - Performed furnace repair on Goodman unit
Logan B.

Logan B.

Performed furnace tuneup on Trane unit

Near Broadway, Boulder, CO 80304
Logan B.

Logan B.

Performed furnace tuneup on Trane unit

Near Broadway, Boulder, CO 80304
Boulder, CO - Performed furnace tuneup on Trane unit
Logan B.

Logan B.

Performed furnace tuneup on York unit

Near Durham St, Boulder, CO 80301
Logan B.

Logan B.

Performed furnace tuneup on Trane unit

Near Durham St, Boulder, CO 80301
Boulder, CO - Performed furnace tuneup on Trane unit
Logan B.

Logan B.

Performed furnace tuneup on Trane unit

Near Durham St, Boulder, CO 80301
Boulder, CO - Performed furnace tuneup on Trane unit
Logan B.

Logan B.

Performed tuneup on Lennox unit

Near Durham St, Boulder, CO 80301
Boulder, CO - Performed tuneup on Lennox unit
Logan B.

Logan B.

Performed tuneup on Rinnai water heater

Near Durham St, Boulder, CO 80301
Boulder, CO - Performed tuneup on Rinnai water heater
Logan B.

Logan B.

Performed furnace tuneup on Trane unit

Near Durham St, Boulder, CO 80301
Boulder, CO - Performed furnace tuneup on Trane unit
Logan B.

Logan B.

Performed furnace tuneup on Lennox unit

Near Durham St, Boulder, CO 80301
Boulder, CO - Performed furnace tuneup on Lennox unit
Logan B.

Logan B.

Performed tuneup on Amana furnace

Near Durham St, Boulder, CO 80301
Boulder, CO - Performed tuneup on Amana furnace
Logan B.

Logan B.

Performed furnace tuneup on York unit

Near Durham St, Boulder, CO 80301
Boulder, CO - Performed furnace tuneup on York unit
Logan B.

Logan B.

Performed furnace tuneup on Heil unit

Near Durham St, Boulder, CO 80301
Boulder, CO - Performed furnace tuneup on Heil unit
Logan B.

Logan B.

Performed furnace tuneup on Heil unit

Near Durham St, Boulder, CO 80301
Boulder, CO - Performed furnace tuneup on Heil unit
Logan B.

Logan B.

Performed furnace tuneup on Trane unit

Near Tahoe Ct, Boulder, CO 80301
Boulder, CO - Performed furnace tuneup on Trane unit
Logan B.

Logan B.

Performed furnace tuneup on Trane unit

Near Tahoe Ct, Boulder, CO 80301
Boulder, CO - Performed furnace tuneup on Trane unit
Logan B.

Logan B.

Performed furnace tuneup on Trane unit

Near Tahoe Ct, Boulder, CO 80301
Boulder, CO - Performed furnace tuneup on Trane unit
Logan B.

Logan B.

Performed furnace tuneup on Trane unit

Near Tahoe Ct, Boulder, CO 80301
Logan B.

Logan B.

Performed furnace tuneup on Trane unit

Near Boulder, CO 80305
Boulder, CO - Performed furnace tuneup on Trane unit
Karl T.

Karl T.

Service AC and Clean Furnace. Add refrigerant to AC

Near Springdale Ln, Boulder, CO 80303
Boulder, CO - Service AC and Clean Furnace. Add refrigerant to AC
Logan B.

Logan B.

Performed repair on Trane unit

Near Table Mesa Ct, Boulder, CO 80305
Boulder, CO - Performed repair on Trane unit
Logan B.

Logan B.

Performed furnace tuneup on Trane unit

Near Table Mesa Ct, Boulder, CO 80305
Boulder, CO - Performed furnace tuneup on Trane unit
Logan B.

Logan B.

Performed furnace tuneup on Trane unit

Near Table Mesa Ct, Boulder, CO 80305
Logan B.

Logan B.

Performed furnace tuneup on Comfortmaker unit

Near Table Mesa Ct, Boulder, CO 80305
Boulder, CO - Performed furnace tuneup on Comfortmaker unit
Logan B.

Logan B.

Performed furnace tuneup on Comfortmaker unit

Near Table Mesa Ct, Boulder, CO 80305
Boulder, CO - Performed furnace tuneup on Comfortmaker unit
Ken M.

Ken M.

Move supply duct on a remodel

Near Lincoln Pl, Boulder, CO 80302
Boulder, CO - Move supply duct on a remodel
Logan B.

Logan B.

Performed swamp cooler shut down on Ultracool unit

Near N Cedar Brook Rd, Boulder, CO 80304
Boulder, CO - Performed swamp cooler shut down on Ultracool unit
Tate N.

Tate N.

Installation of a Mitsubishi mini split ac system.

Near 4th St, Boulder, CO 80302
Boulder, CO - Installation of a Mitsubishi mini split ac system.
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Expert Service from People You Can Trust
6175 Trevarton Dr. Longmont, CO 80503
Not Open to Walk-in Traffic
PHONE:   303-435-8141
HOURS:   Monday - Friday: 8AM to 5PM
Expert Service from People You Can Trust
6175 Trevarton Dr. Longmont, CO 80503
Not Open to Walk-in Traffic
HOURS:   Monday - Friday: 8AM to 5PM
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For Furnace in Boulder CO, we accept most major credit cards.
 
We accept cash for Water Heater repair service provided in Longmont CO.
We accept check for Boiler repair service provided in Louisville CO.
 
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