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Environmental Systems Heating & Cooling

Founded 1994 • With Angi since August 2010


(1) Verified Reviews


Serving customers in Miami, Johnson and Linn counties since 1994, we are a full service heating and cooling company providing installation, maintenance, service and repair of all HVAC and indoor air quality systems. Proud to sell Trane products, we service all brands of furnaces and air conditioners. Our technicians are factory trained and our company is licensed and insured. ...

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Mammoth Heating and Cooling LLC


(9) Verified Reviews

Mammoth Heating and Cooling LLC

Mammoth Heating and Cooling was founded in 2020 by industry veteran Zach Stangl with the bold idea to disrupt the HVAC industry in the community's Mammoth Serves by providing customers with a unique and differentiated choice in HVAC providers. Zach has built Mammoth Heating and Cooling from a small start-up company to a thriving enterprise executing on the Mammoth formula. The Mammoth Formula is elegant in its simplicity. Offer the best prices in town by cultivating and maintaining superior relationships with US-made HVAC manufacturers, keep expenses lean and disciplined, and then deliver an experience that puts Mammoth's customer in control through choice, value, and transparency.

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A few reviews for this pro…



Called Shana (spelling?), who later identified herself as the owner. She was very pleasant. Set up an appointment to have our Amana Heat Pump repaired (warranty service). They were to be at my home on 6/12/2019 between 12:00 to 1:00 pm. They never showed. They called my wife at work (not me, waiting for them at home) and said they would be "a little late" and make it at 4 pm. They never showed. Th...


CATEGORY heating & air conditioning/hvac

Services Offered

Installation, Preventative Maintenance, Service Contracts, Repair including 24 hour Emergency Service, Extended Warranties, Parts, Free estimates, Sheet metal Fabrication

Services Not Offered

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General Information
Free Estimates
Payment Options
Check, Visa, MasterCard, Financing Available
Senior Discount
Emergency Service