3758 E. 104th. Ave. #65
Thorton, CO 80233
720 465 6699

Local Reviews
for thornton, co

Rated 5.0 out of 5 stars based on 7 customer reviews

Excellent service

I needed a new furnace and air conditioning unit after my old furnace conked out. 303 Heat came out immediately gave me my options fixed everything the next day. Not only did they do a great job but they made sure I had space heaters so I wouldn’t freeze the night before everything was changed out. Professional and personable service.


Response from 303 Heat:

Thanks Toni!

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Awesome service Roberto!!

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Roberto was great- will recommend

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Exceeded expectations!!!!

Years of experience from Jarred made an enormous difference today! What I was told would be a complete replacement from 5 other companies, Jarred fixed in a short amount of time for nothing compared to what a replacement unit would cost. I am speechless that I went without a a/c all summer and today Jarred changed that thanks to his expertise.

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Great service all around

Called them and they got someone in that day. Offered me a great furnace for a great price, got it installed right away and was very helpful!

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Highly Recommend

Fast, friendly, and very knowledgeable! Fix our heating issues quickly and saved the day!

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Great price and convenient time! Thanks!

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Job Locations
for thornton, co

Roberto G.

Roberto G. Job Checkin

Service call for Nest thermostat saying no power to Rh wire detected. Upon inspection found that the limit switch needed replaced.


April H.

April H. Job Checkin

Replaced existing system with Amana, Single Stage, 2 Ton Air Conditioner, Matched Indoor Coil, 2 Ton, Evap Coil, Amana, Single Stage, 60,000 BTU Furnace, and Honeywell T4 Series Thermostat.


Roberto G.

Roberto G. Job Checkin

Furnace tune up. Upon inspection I found that the flame sensor rod needed cleaning and a capasitor needed replaced.

Furnace tune up.  Upon inspection I found that the flame sensor rod needed cleaning and a capasitor needed replaced.

Jared H.

Jared H. Job Checkin

Furnace and air conditioning installation in Thornton co

Furnace and air conditioning installation in Thornton co

Roberto G.

Roberto G. Job Checkin

Furnace repair


Roberto G.

Roberto G. Job Checkin

Furnace repair

Furnace  repair

Roberto G.

Roberto G. Job Checkin

Replacement of gas furnace and installation of new AC. Electrical panel needed replacing to be able to support the addition of the AC. One of our trusted elecrtician subs did a great job installing the new electrical panel.

Replacement of gas furnace and installation of new AC. Electrical panel needed replacing to be able to support the addition of the AC. One of our trusted elecrtician subs did a great job installing the new electrical panel.

Roberto G.

Roberto G. Job Checkin

Furnace not staying on to complete heating cycle. Upon arrival found that high limit switch kicking furnace off on safety. Found bad blower motor capacitor and dirty blower wheel . Provided customer with blower wheel cleaning, furnace cleaning, free evap coil cleaning, and replaced capacitor at time of visit.

Furnace not staying on to complete heating cycle. Upon arrival found that high limit switch kicking furnace off on safety.
Found bad blower motor capacitor and dirty  blower wheel .
Provided customer with blower wheel cleaning, furnace  cleaning, free evap coil cleaning, and replaced capacitor at time of visit.

Roberto G.

Roberto G. Job Checkin

Customer described Furnace working intermittently, then not working at all. Upon arrival furnace not operating. Found high voltage incoming, but no low voltage throughout the system. Found loose neutral connection at the transformer, tightened spade connector reconnected to transformer and furnace started up. Checked unit for other issues. Found a clogged, dirty air filter. Removed it from the furnace. Explained to customer maintenance procedures on filter replacement and reccomend our annual maintenance plan to verify operations on furnace.


Jared H.

Jared H. Job Checkin

Furnace installation in Thornton co

Furnace installation in Thornton co

Roberto G.

Roberto G. Job Checkin

Furnace service


Roberto G.

Roberto G. Job Checkin

I just completed a Furnace Clean and Inspection for a customer that is selling their home in Thornton

I just completed a Furnace Clean and Inspection for a customer that is selling their home in Thornton

Jared H.

Jared H. Job Checkin

Thornton Magic-pak replacement appoinment turned into a magic-pak repair on the heating and air conditioning. Had to rewire the unit and change the capacitor to buy time since there's some supply chain issues for these units.

Thornton Magic-pak replacement appoinment turned into a magic-pak repair on the heating and air conditioning. Had to rewire the unit and change the capacitor to buy time since there's some supply chain issues for these units.

Jared H.

Jared H. Job Checkin

Air conditioning repair Thornton Colorado. Cleaned outdoor coil and checked R22 refrigerant.


Jared H.

Jared H. Job Checkin

Furnace repair in Thornton co. We did a full Furnace inspection and tune up in Thornton co.

Furnace repair in Thornton co. We did a full Furnace inspection and tune up in Thornton co.