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Don't wait for the cold to hit, schedule your furnace tune-up with Sprague Mechanical today!

Call Or Text To Schedule An Appointment

Professional HVAC Installations & Repairs In Belfair, WA Since 1998!

Proudly Serving Shelton, Hoodsport & Nearby Communities with Professional HVAC Services

Since 1998, Sprague Mechanical of Belfair, WA, has been Mason County’s trusted source for professional  HVAC installation, repairs, and maintenance. From reliable heating during our damp, chilly winters to efficient cooling for those warm summer days, we keep homes comfortable year-round. Our experienced team works on all types of systems—whether you’re upgrading outdated equipment, scheduling seasonal maintenance, or installing a brand-new unit. As a local, family-owned business, we’re proud to deliver expert service, honest solutions, and lasting comfort to our neighbors across Mason County.

Is your home ready for the summer heat in Mason County?


Sprague Mechanical offers complete air conditioning solutions, including expert installation, reliable repair, and preventative maintenance. If your system is outdated, struggling to keep up, or you’re adding AC for the first time, our team can recommend the right unit and install it for lasting comfort. We also provide seasonal tune-ups to keep your system efficient and dependable repairs when issues arise. With a commitment to quality service and customer care, Sprague Mechanical keeps homes cool and comfortable all summer long.

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Looking for a reliable way to stay comfortable year-round?


Heat pumps provide efficient heating and cooling in one system, and Sprague Mechanical offers expert installation, repair, and maintenance to keep them running strong. Whether you’re replacing an outdated unit, adding a heat pump for the first time, or scheduling routine service, our technicians deliver dependable results with a focus on efficiency and long-term performance. With trusted expertise and quality workmanship, Sprague Mechanical is the choice for comfort in every season.

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Sprague Mechanical provides expert furnace installation, repair, and maintenance to keep your home comfortable through the coldest months. We offer energy-efficient furnace options with professional installation for reliable, lasting comfort. If your system is underperforming, our team delivers quick, dependable repairs to restore heat. Seasonal tune-ups improve efficiency, extend equipment life, and help prevent costly breakdowns. With quality workmanship and dedicated customer care, Sprague Mechanical is the trusted choice for furnace service that ensures comfort, safety, and long-term value.

New furnace installation in Shelton, WA by Sprague Mechanical

Sprague Mechanical provides complete HVAC installation, repair, and maintenance to keep your home comfortable year-round. We install modern, energy-efficient systems for lasting performance and deliver expert repairs for furnaces, heat pumps, and air conditioners when issues arise. With preventative maintenance and system upgrades, we help improve efficiency, extend equipment life, and reduce costly breakdowns. Backed by honest recommendations and precise workmanship, Sprague Mechanical is the trusted choice for HVAC solutions that ensure comfort, reliability, and long-term value.

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Areas We Serve

Sprague Mechanical LLC proudly serves all of Western Washington, including:

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Heating and Cooling Made Simple
 Furnaces, heat pumps, or AC, Sprague Mechanical has you covered.

Call or text 360-509-6629 for dependable service.