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Family-Owned Heating, Cooling & Indoor Air Quality

Keeping Homes Comfortable in Sonoma County, CA & The Surrounding Areas!

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Areas We Serve

Your Local HVAC Experts – Always Nearby, Always Ready

Providing 5-star rated heating and cooling services to homes in Sonoma, CA & beyond.

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20+

Years OF Experience
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about us

Why Mountain House Mechanical?

At Mountain House Mechanical, we understand the importance of maintaining a comfortable and healthy environment for your home. That’s why we offer a wide range of HVAC services to meet all of your needs to keep your home feeling like home.

Committed to Comfort

We prioritize your comfort with tailored HVAC solutions designed for your unique space, lifestyle, and budget. Whether it’s heating, cooling, or indoor air quality, our goal is to keep your home comfortable year-round with energy-efficient systems you can rely on.

Dedicated to Service

As a family-owned and operated company, we believe in honest, dependable service that puts your needs first. Our certified technicians show up on time, communicate clearly, and get the job done right—the first time. Your satisfaction is always our top priority.

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Testimonials

What Our Clients Are Saying

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FAQS

Frequently Asked Questions

You can reduce HVAC costs by scheduling regular maintenance, changing filters regularly, sealing air leaks, and installing a programmable thermostat. Upgrading to a high-efficiency system also significantly cuts energy use over time.

If your furnace or heat pump is blowing cold air, making unusual noises, short cycling (turning on and off frequently), or causing a sudden spike in your energy bill, it’s likely time for a repair. You might also notice weak airflow, inconsistent room temperatures, or strange smells. Our licensed technicians at Mountain House Mechanical are trained to quickly diagnose and repair all types of heating systems—whether it's a traditional gas furnace or a modern heat pump.

Yes! As a matter of fact we are the experts. We utilize an ACCA accredited Manual J software to assess your home’s size, building characteristics, insulation, and energy needs to recommend the most efficient and cost-effective heating system for your comfort and budget. No guessing or using “rules of thumb”. We determine the exact btu requirements of your home, guaranteeing proper performance and longevity of your new heating and/or air conditioning equipment. Ask our competitors if they have completed a Manual J load calculation to properly size your equipment, the replies will likely both surprise and concern you.
Unusual noises like banging, rattling, or squealing can signal a loose part, worn component, or airflow issue. If your HVAC unit is louder than normal, it’s best to schedule a professional inspection before it leads to bigger, more expensive problems.
A ductless (or ventless) system uses wall-mounted units to heat and cool individual rooms without traditional ductwork. It’s perfect for older homes, room additions, or any space that needs targeted temperature control. Added benefits of ductless systems include the ability to have separately controlled zones, which means you don’t have to heat or cool the entire house, just the areas that are occupied, resulting in significant savings on your utility bill. In addition , the absence of ductwork through unconditioned crawl spaces and attics means increased efficiency due to the elimination of any air leakage and heat transfer that occurs outside the living area of the home.

Our Blog

HVAC Tips & Trends

How to Improve Indoor Air Quality with Professional HVAC Solutions

When most people think about what makes a home comfortable, they imagine well-kept rooms, functioning appliances, and climate control. Indoor ...

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Zoned HVAC Systems

Unlocking Ultimate Comfort: Zoned HVAC Systems Zoned Central HVAC When it comes to maintaining a comfortable indoor environment, traditional HVAC ...

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Ductwork: The unsung hero of every HVAC system

The Basics of HVAC Ductwork Ducts are essential to the performance and efficiency of your HVAC system. They distribute heated ...

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Let Our Family Take Care of Yours

Get reliable, 5-star HVAC service from a team that treats your home like their own.