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Heating Installation in Seattle, WA

Heating installation in Seattle, WA: expert assessment, system options, permitting, and post-install support. Learn more.

Heating installation in Seattle, WA provides expert assessment with tailored system options to deliver year-round comfort. The service covers load calculations, duct design or ductless solutions, proper venting and safety checks, permitting, installation scheduling, and post-install commissioning. Homeowners learn about air-source heat pumps, ductless Mitsubishi systems, high-efficiency furnaces, and hybrids, plus energy rebates and financing where available. A thorough process emphasizes efficiency, code compliance, warranties, and clear documentation to ensure reliable performance and long-term peace of mind.

Heating Installation in Seattle, WA

Heating Installation in Seattle, WA

Upgrading or installing a new heating system is one of the most effective ways to improve comfort, reduce energy bills, and meet modern efficiency standards in Seattle homes. Whether you are replacing an aging furnace, switching to an all-electric heat pump, or adding a ductless Mitsubishi system to a remodeled room, a proper installation starts with a thorough assessment and ends with verified performance, permitting, and long-term support. This page explains what to expect from professional heating installation in Seattle, WA, common choices for local homes, and the practical steps that deliver reliable year-round comfort.

Why thoughtful heating installation matters in Seattle homes

Seattle has mild but damp winters and frequent temperature swings that reward efficient, consistent heating. Systems sized or installed incorrectly create uneven comfort, higher utility bills, and increased wear. A professional installation tailored to your home will:

  • Match system capacity to the actual heating load of the house
  • Optimize ductwork or choose ductless solutions where appropriate
  • Maximize efficiency for local climate conditions, particularly with heat pumps
  • Ensure compliance with Seattle and King County permitting and energy codes
  • Deliver documented warranties and post-install test results for peace of mind

Common heating installation options in Seattle

  • Air-source heat pumps: Highly efficient in Seattle’s moderate winters; available as centralized systems or ductless mini-splits. Heat pumps can provide both heating and cooling, reducing the need for separate systems.
  • Ductless Mitsubishi systems: Ideal for additions, condos, or homes without existing ducts. Multiple indoor heads can heat different zones efficiently while minimizing installation disruption.
  • High-efficiency gas furnaces: Still common where existing gas infrastructure exists. Proper venting and combustion safety checks are essential.
  • Hybrid systems: Paired heat pump and furnace setups that switch between electricity and gas for cost-effective comfort across a range of temperatures.
  • Duct design and retrofit: New ducts or modifications to existing ductwork to improve airflow, balance, and system efficiency.

Typical problems that lead homeowners to replace or upgrade

  • Uneven room temperatures or cold spots
  • Repeated breakdowns and rising repair costs for older systems
  • High energy bills despite regular use
  • Remodeling that requires re-zoning or adding conditioned space
  • Desire to move off fossil fuels or take advantage of available rebates and tax incentives

The professional installation process — what to expect

  1. Home assessment and load calculation
  • A technician conducts a walk-through and performs a heating load calculation (commonly called Manual J) to determine accurate heating capacity based on insulation, windows, orientation, and local climate. This prevents oversized or undersized equipment decisions that undermine efficiency and comfort.
  1. Recommendations and system selection
  • Based on the load calculation, existing ductwork, and your preferences, the team will recommend options such as heat pumps, ductless Mitsubishi units, or high-efficiency furnaces. Recommendations include expected efficiency gains, suitability for Seattle’s climate, and long-term operating costs.
  1. Ductwork evaluation and design or modifications
  • If ducts exist, they are inspected for leaks, size adequacy, and layout. Necessary repairs or redesigns are planned to optimize airflow and balance. For homes without ducts, ductless mini-splits or packaged systems are evaluated as lower-impact alternatives.
  1. Permitting and code compliance
  • Installations in Seattle require adherence to local building codes and permitting. A professional installer prepares permit applications and ensures work meets Seattle and King County requirements, including energy code standards and safety inspections.
  1. Installation timeline and coordination
  • Typical installations vary by system complexity: a simple ductless unit can be done in a day, whereas full system replacements with duct modifications or gas line work may take several days. The schedule accounts for city inspections and any specialty trades needed.
  1. Warranty registration and documentation
  • Equipment warranties and workmanship guarantees are documented and registered where required. You receive written specifications and manuals for the installed system.
  1. Post-install testing and commissioning
  • Final steps include airflow measurements, static pressure checks, refrigerant charge verification for heat pumps, thermostat calibration, combustion safety testing for gas appliances, and a performance demonstration. These tests confirm the system operates to design specifications.

Energy efficiency, rebates, and financing help for Seattle homeowners

Seattle’s climate makes heat pumps and ductless systems especially attractive because they deliver high efficiency without the extreme cold-weather losses seen elsewhere. Many homeowners qualify for utility rebates, state incentives, or federal tax credits when upgrading to high-efficiency electric systems or heat pumps. Professional installers typically track available incentives and can assist with rebate paperwork, documentation required for permitting, and financing options tailored to energy upgrades. This assistance helps make efficient systems more accessible and aligns installations with local incentive programs.

What good post-install support looks like

  • Clear warranty terms for equipment and labor
  • Documentation of permit approvals and inspection sign-offs
  • A commissioning report showing measured performance metrics
  • Guidance on simple seasonal maintenance tasks and recommended service intervals
  • Options for scheduled maintenance agreements to protect warranty coverage and long-term efficiency

Final benefits and maintenance tips

A correctly sized and professionally installed heating system provides immediate comfort improvements and long-term savings. In Seattle, moving to a heat pump or well-designed ductless system can lower energy use while offering the added benefit of summer cooling. To preserve performance:

  • Keep filters clean and replace them per manufacturer guidance
  • Maintain clear airflow around indoor and outdoor units
  • Schedule annual maintenance checks, especially for refrigerant-based systems and combustion appliances
  • Address duct leaks or insulation shortfalls found during installation to maximize system efficiency

Choosing the right heating installation for your Seattle home starts with an accurate assessment and ends with verified performance and proper permitting. With careful planning, modern systems deliver quieter, more efficient comfort that matches the region’s climate and energy goals.

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Customer Testimonials

Our customers consistently praise our exceptional service and attention to detail, highlighting the positive impact we've had on their experiences.

Green Head Heating did the HVAC on our large new construction custom home. They have more than taken care of us from start to finish. Everything was VERY well thought out. They were knowledgable with energy credits, which is often times missed! This was a trade that was very important to us as it is inside your walls. I am certain we have the BEST system. They truly didn’t miss anything! Would highly recommend!

Brittany A.

Ryan has the exact experience to make sure you’re getting the climate control that your home needs. His knowledge is extensive and he always has an answer to every question and on top of that he’s pleasant to work with. Ryan and his main tech Tristan have done many high quality HVAC installs that I have seen in the last year and I couldn’t imagine trusting anyone else for the job. Thank you, Greenheads!

Karlan S.

We decided to replace our very old gas furnace with a newer and hopefully quieter furnace.  We contacted Greenhead because they were a smaller, local business.  Everything about the process was excellent.  Best of all the furnace is exceptionally quiet.  Thanks Greenhead.

Bruce R.

Would recommend! Our heat cut out during a cold snap - I called Greenhead the next morning and Ryan was at my house the same afternoon. He quickly diagnosed a faulty switch in our furnace and was back that evening with a new part! Pricing was reasonable, especially given the urgency.

Eamonn K.

I had Greenhead out to do service on my gas furnace and heat pump. Ryan was very professional and helpful. The service was very reasonably priced even though they were there in the evening! I would recommend them to anyone.

Lindsay P.

Came same day when we had no heat. Worked quickly to find the issue while explaining everything he was doing. Really took the time to make us feel like a valued customer not just a number. Also the pricing was very fair which in todays economy is always so helpful... we will be using this company for all future heating needs

Madison B.