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Avatar for Thermal Mechanics
Thermal Mechanics
5.0(
6
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallCentral A/C - Service or Repair+23 more

Serving Jefferson, CO and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of HVAC services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!

Full system install
13 neighbors recently requested a quote
K&G builder’s
New to Angi
Central A/C - InstallCentral A/C - Service or RepairCentral Air Cleaner - Repair or Service+24 more

Serving Jefferson, CO and surrounding areas

Approved

We provide complete HVAC solutions for both residential and commercial projects throughout Denver and all of Colorado.\n\nWe specialize in the installation, maintenance, and repair of:\n✔ Central air conditioning systems\n✔ Mini split systems\n✔ Furnaces (heating systems)\n✔ Full HVAC systems\n\nOur team is committed to delivering accurate diagnostics, efficient solutions, and high-quality workmanship on every job. Whether it’s a small residential service or a large commercial project, we have the experience and capability to get the job done right the first time.\n\nWe focus on comfort, energy efficiency, and long-term system performance, adapting every installation to meet Colorado’s climate demands.\n\n✔ Residential & Commercial Work\n✔ Reliable and Professional Service\n✔ Fast and Efficient Response\n\n📍 Serving Denver and all of Colorado\n📞 Free estimates available\n

Avatar for The Duct Doctor Of Denver LLC
The Duct Doctor Of Denver LLC
New to Angi
Air Ducts & Vents - Clean

Serving Jefferson, CO and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

Welcome to our duct cleaning and indoor air quality service! Founded by a passionate professional from the medical field, At The Duct Doctor Of Denver we understand the crucial link between air quality and your health. Our mission is to provide top-notch services at affordable prices, ensuring that everyone can breathe easier without breaking the bank. Trust us to put your health first with reliable and affordable high-quality solutions.

Avatar for Electrical Innovations LLC
Electrical Innovations LLC
New to Angi
Thermostat - Install or Replace

Serving Jefferson, CO and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

Electrical innovations provides electrical safety for families homes, and peoples businesses. We are a fully licensed and insured company who’s been in business since 2010. We are a family owned and operated business who strives for making families happy and satisfied returning customers.

Avatar for Grand Hands Home Services
Grand Hands Home Services
New to Angi
Air Ducts & Vents - CleanElectric Boiler or Radiator Heating System - InstallElectric Boiler or Radiator Heating System - Repair+4 more

Serving Jefferson, CO and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

With over 15 years of experience in the home service industry and 10 years as a licensed plumber, I bring knowledge, skill, and reliability to every job. I’ve worked on everything from simple repairs and fixture installations to full plumbing system replacements and complex troubleshooting.\n\nAs a licensed professional, I understand the importance of doing the job right the first time—safely, efficiently, and up to code. I take pride in providing honest assessments, clear communication, and high-quality workmanship that homeowners can trust.\n\nMy goal is simple: deliver dependable service, lasting solutions, and a great customer experience on every visit. Whether it’s a small repair or a major plumbing project, you can count on professionalism, attention to detail, and results built to last.

Avatar for Comfort By Design
Comfort By Design
4.8(
42
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+47 more

Serving Jefferson, CO and surrounding areas

In business since 2019

Free estimates

Emergency services offered

"Comfort by Design did a fantastic job with my water heater from start to finish. When I called, the receptionist was highly knowledgeable about scheduling and pricing, and she was quite willing to let me call other places since I was researching price and availability. I ended up sticking with Comfort by Design largely because the receptionist was not pushy, listened well to me, and had technicians available that day. I like hiring companies with whose employees listen to me and work with me to solve a problem, as opposed to pressuring me to choose them or to buy more than I'm comfortable with. My initial interaction with Comfort by Design met those criteria. A technician arrived within the time-frame I was quoted, and he had the part I thought was broken on my water heater. After diagnosing the issue, though, he discovered that there was at least one other broken/malfunctioning part that needed to be replaced. He showed me the problem and explained the process of replacing it. After discussing my options with the technician, I decided to replace the water heater. At no point did I feel pressured into making that decision. The best surprise of the day was that Comfort by Design was able to replace the water heater immediately. Another technician was available to immediately bring the water heater, and the two techs worked together to install the new one and remove the old one. They also carted the old one away. Before leaving, they patiently answered several other questions I had, and they explained and scheduled the necessary inspection of their installation. They did a great job respecting my property while moving the large water heaters, and they did a great job cleaning up after themselves. Finally, the cost was reasonable and about what I expected to pay. Custom by Design is definitely going to be the first place I call should I have any plumbing or HVAC (they also do HVAC!) needs in the future."
Mini Split Install
A/C Install
Before
Furnace Install
Mini Split Install

+16

Response time10 hrs
Response rate100%
Recommended by89%of homeowners
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Heating and Air Conditioning questions, answered by experts

It’s critical to use the right size AC for your space and not go too small or too big. If you purchase an undersized unit, it won’t properly cool your house, and it has to work harder to reach the optimal temperature. This will eventually wear your unit out. An oversized unit can spell trouble because it will turn off and on more frequently, which also wears out your AC unit. An oversized unit also causes humidity in the home.

AC leaks are common, and an HVAC pro can usually fix them. You may be able to resolve some leaks on your own, but a professional HVAC technician should handle most AC leak repair. If left ignored, an AC leak could cause serious damage to your system or leave you with expensive water damage, usually leading to more costly repairs or replacements.

You should use a breathable, weather-resistant cover with ventilation. It can be a top cover or a full cover that has mesh to allow airflow. A full, non-breathable cover can cause moisture to build up, leading to rust, frozen parts, and corrosion. A full cover also attracts unwanted critters, such as mice, that can damage the wiring and your unit. If you need to protect your AC unit from falling icicles, choose a sturdy top cover or piece of wood that prevents icicles from damaging your unit.

Water buildup in your HVAC system is a cause for alarm. If water accumulates in your ductwork, it can drastically lower your home's air quality and create safety hazards. These risks include mold growth, damage to your HVAC system, and attracting pests that are seeking water into your ducts. Proper insulation and sealing of ducts can prevent this, and regular inspection and maintenance can address water damage problems before they become too severe.

One of the first signs of mold in an air conditioner is a musty smell. You're likely to notice the smell when the unit runs, from the air coming out of the vents or the unit itself. You may also be able to see mold growing on the unit, such as near the condenser coils or by the fan. In some cases, there may be visible mold by the vents.

The Jefferson, CO homeowners’ guide to heating and air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.