We are experts in the design and sizing of all types of forced air heating systems. Let us design and install a high efficiency heating system that keeps you comfortable on the coldest of days.
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Air Conditioning

We are experts in the design and sizing of high efficiency air conditioning systems. Let us design and install a high efficiency system that keeps you comfortable when the heat is unbearable.
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Water Heating

Whether you are looking for a standard tank hot water heater or a high efficiency tankless water heating system. We are the right choice. We can design high GPM tankless systems that fits your needs perfectly.
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High efficiency

Are you interested in upgrading your home's HVAC system to today's green standard. High efficiency needs to be thought out and personalized to your home. Let us design and install the best system for your home.
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Square Installments

Air Conditioning Repair & Heating Service

ROX Heating & Air is committed to performing expert quality AC repair, maintenance and installation throughout the Denver Metro Area.

Call (720) 468-0689 - 100% satisfaction guaranteed!

Air Conditioning

We offer both residential and commercial air conditioning installation, repair, service, and maintenance.

Heating & Furnace

We offer both residential and commercial Furnace and Boiler installation, repair, service, and maintenance.


We offer both the most competitive and inclusive residential and commercial HVAC Service and Maintenance Plans in the Denver Metro Area.

Quality heating & air conditioning solutions

Hello and welcome.  Looks like you found us by typing in Rocks Heating & Air, instead of ROX Heating & Air.  Well that’s ok, it sounds the same but is missing the X baby.  The X Factor, the Xtra, the Xtraordinary.  We are ROX Heating & Air.  Simply put we are the best HVAC Company in Colorado, Denver, Littleton, Highlands Ranch, Lakewood, Aurora, Centennial, Englewood, Arvada, Thornton, Golden, Wheat Ridge and pretty much everywhere else.

We do a lot of advertising on the radio and sometimes it sounds like our name is pronounced Rocks heating & air.  But really it is ROX Heating & Air.   We specialize in all things HVAC.  Service, Installation and Repair of furnaces, air conditioners, water heaters, tankless water heaters, humidifiers, indoor air purification, commercial HVAC, Roof top units, and many more areas of HVAC.

If you heard Rocks Heating & Air on the Radio, You are in the right place.  ROX Heating & Air.



certified & professional

Quality service is very important to us. To ensure the highest quality service and expertise, we have undergone extensive technical training and education. NATE certification requires yearly continuing education and re-certification. You can trust ROX Heating and Air to provide the best HVAC service and experience in town.

More About Us
Michael Diffoot
Michael Diffoot
03:58 05 Sep 20
We could not be happier with the service we got from ROX. We called less than the night before for an appointment and they had our work scheduled the next day. Our Technician Garrison was professional, a clear expert in the field and easy to talk to. He explained everything that needed to be done and all of our options. He completed the work swiftly and we couldn't be happier. I have already recommended ROX to several friends for their AC needs.read more
Erin Boardman
Erin Boardman
05:04 18 Aug 20
Jason was awesome and his estimate was very reasonable. He also spent a lot if time on the phone helping my husband make the decision of what was the best AC/furnace/water heater option for our home. The 2 guys that came and did the work were on time, friendly, and thorough when it came to explaining our new unit and its maintenance. They explained warranties and I feel confident that they will stand behind their work. I highly recommend Jason and his team.read more
Kevin Lovelace
Kevin Lovelace
13:29 16 Aug 20
Jason and his small team provide an excellent, professional service without price gouging like some of the “name brand” HVAC companies here in Denver. Trust me, when you hear those other names on the radio, you’re going to pay at least 30% more for no added value. Jason always goes the extra mile to ensure the system he installed continues to provide me and my family the quality home environmental temperatures he promised (and it very much does, always!).read more


Our team of highly trained and dedicated technicians will provide you with the absolute best service you can find. Let us show you how HVAC service should be. Affordable, Reliable and Honest Air Conditioning, Furnace, Boiler, Humidifier, Water Heater, Tankless Water Heater, Heat Pump and all other HVAC service, repair, maintenance and installation.

Heating, Ventilation and Air Conditioning Installation

Whether you have moved to a new house or your existing one needs some overhauling, we can install the HVAC system into the building in less time, more efficiency and certainly less cost for you. Unlike the very large expensive companies, at ROX, we are your local residents here to help our neighbors with our affordable, responsive and expert HVAC services.Give us a call to know more about our installation services.

Save Money on HVAC Repair in Castle Pines

We offer a very competitive pricing compared to the rest of the HVAC market in Colorado. Not only are our prices fixed and genuine, we also focus on repairing or replacing only the required part to minimize your expenses, instead of unnecessarily carrying out tasks that are unnecessary that cost you more money. We also only sell you products you truly need, our promise to you is to always be honest and truthful when servicing your HVAC equipment.

Castle Rock Heating & Air Conditioning

Summer can be dreadful if your air conditioner breaks down unexpectedly. A great option to prevent summer air conditioning breakdowns is to have annual maintenance done before the heat of the summer season. We, at Rox Heating & Air provide routine check up and service for castle rock air conditioning. But in case you didn’t have an ac tune up this spring, you are still in luck. Give us a call if you live in Castle Pines for heating and cooling service our team at ROX is NATE certified to carry out all kinds of HVAC repair services.ROX Heating & Air is not restricted to Castle Pines alone. Beyond Castle Pines, we service cooling and heating units in residential and commercial buildings in Centennial, Cherry Hills, Littleton, Parker, Lakewood, Castle Rock, Roxborough, Highlands Ranch, Lone Tree, and the entire Denver Metro Area. Our certified and experienced technicians provide expert air conditioning and heating services such as Installation, Repair, Maintenance and Replacement.

Service Areas


We are NOT - ROCKS Heating & Air We are the Best HVAC Company in Denver, Littleton, Highlands Ranch, Parker, Castle Rock, Aurora, Lakewood, Centennial, Englewood, and pretty much every other city. WE ARE ROX Heating & Air

1745 Shea Center Dr 4th Floor, Littleton, CO 80129