What HVAC services do you provide in Newcastle?

We provide a full range of heating and cooling services in Newcastle, including HVAC repair, maintenance, replacement, and installation. Our technicians service furnaces, air conditioners, heat pumps, ductwork, thermostats, and indoor air quality equipment. Whether you need a routine tune-up, help with a system that has stopped working, or an estimate for new equipment, our team can help.

Do you service all HVAC brands in Newcastle?

Our technicians are trained to service and repair most major HVAC brands and system types. If you’re having trouble with your HVAC equipment, give us a call and we can confirm service availability for your specific system.

What are the signs I should call an HVAC technician?

Call an HVAC technician if your system is not heating or cooling properly, won’t turn on, cycles on and off frequently, makes unusual noises, produces strange odors, or causes unexpectedly high energy bills. A professional inspection can identify the problem and recommend the appropriate repair.

Do you provide emergency after-hours HVAC service in Newcastle?

We are available 24/7 to take your call for emergencies. Our appointment hours are listed above.

Do you offer HVAC financing in Newcastle?

We work with several lenders to provide financing options for qualifying customers. Ask your technician about your financing options.

How often should I have my furnace serviced in Newcastle?

It’s recommended to have your furnace professionally serviced once a year, ideally in the fall before the heating season begins in Newcastle. Annual maintenance helps ensure safe operation, improves efficiency, and can extend the life of your system.

How often should I schedule AC maintenance in Newcastle?

You should schedule AC maintenance once a year, ideally in the spring before the cooling season starts. Regular tune-ups help your system run efficiently, prevent breakdowns, and extend the life of your unit, especially important in Newcastle's summer climate.

Can you repair my HVAC system if you didn’t install it?

Yes. Our technicians can diagnose and repair most HVAC systems, even if another company originally installed the equipment. We service many major brands and system types, and we’ll inspect the issue, explain your repair options, and provide pricing before work begins.

What should I do if my furnace or AC suddenly stops working?

First, check that your thermostat is set correctly, your HVAC system has power, and the circuit breaker hasn’t tripped. If the system still won’t run, is making unusual noises, or you notice burning odors, leaks, or other concerning symptoms, contact an HVAC professional to diagnose the problem and schedule service.

Should I repair or replace my furnace?

That depends on your furnace’s age, condition, repair history, and overall efficiency. A newer furnace with a relatively minor problem may be worth repairing, while an older system that needs frequent or expensive repairs could be a better candidate for replacement. Rising energy bills, uneven heating, unusual noises, and recurring breakdowns can also be signs that it’s time to consider a new system. Our HVAC professionals can inspect your furnace, explain your options, and help you compare the cost and benefits of repair versus replacement without unnecessary guesswork.

Do heat pumps work well during Seattle-area winters?

Yes. Modern heat pumps can work very well during Seattle-area winters, where temperatures are generally milder than in many other parts of the country. Heat pumps provide both heating and cooling and can be an energy-efficient option for many homes in Newcastle and the surrounding area.

What size HVAC system is right for my home in Newcastle?

The right HVAC system size for your home in Newcastle depends on factors like square footage, insulation, number of windows, and local climate. A professional load calculation ensures your system is properly sized for comfort and efficiency. Oversized or undersized units can lead to higher energy bills and uneven temperatures.

How much does HVAC repair cost in Newcastle?

Minor repairs may cost a few hundred dollars, while more extensive issues involving major components can cost significantly more. At One Hour Heating & Air Conditioning®, we use StraightForward Pricing®, so you’ll know the cost of the recommended repair before work begins. We also offer financing options for qualifying services to help make unexpected heating and cooling repairs more manageable.

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Bringing Comfort Home

Newcastle HVAC Services

One Hour Heating & Air Conditioning® of Newcastle

(103 reviews)

Heating & Cooling

Services By One Hour

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HVAC Emergencies

Fast 24/7 emergency HVAC repairs to restore your comfort when you need it most today.
Air Conditioning

Reliable air conditioning services to keep your home cool and comfortable all year.
Thermostat Repair

Expert thermostat services for precise temperature control and maximum energy savings.
Indoor Air Quality

Comprehensive air quality solutions for healthier, cleaner indoor air in your home.
Heating

Professional heating services to keep your home warm and comfortable year-round.

Newcastle AC Services

Air Conditioning Repair, Installation & Maintenance

The Best HVAC Company Near You in Newcastle

Professional HVAC Repair, Installation & Maintenance Services

When you need dependable heating and cooling service in Newcastle, WA, choose an HVAC company that gives you clear reasons to feel confident in your decision. One Hour Heating & Air Conditioning® is locally owned, veteran operated, and committed to serving homeowners throughout Newcastle, Tukwila, and the surrounding communities. Our residential HVAC contractors provide heating and cooling repairs, maintenance, system replacements, and emergency service to help keep your home comfortable year-round.

We make HVAC service easier with our On Time Guarantee, StraightForward Pricing®, and a 100% satisfaction guarantee. Homeowners can also take advantage of available financing options, maintenance and membership plans, and strong warranties designed to provide added peace of mind before, during, and after service.

If you’re searching for the best HVAC contractors in Newcastle, Tukwila, and beyond, choose a team that respects your home, your time, and your trust. Whether you need an urgent HVAC repair, seasonal maintenance, or a complete heating and cooling system replacement, One Hour Heating & Air Conditioning® of Newcastle is ready to provide dependable service backed by meaningful guarantees. For HVAC service in Newcastle, Tukwila, and nearby areas, contact our team today.

One Hour Heating & Air Conditioning technician Checkin HVAC.

Hours of Operation

We are available 24/7 to take your call for emergencies. For all other services, our appointment hours are:

Monday

24 hours

Tuesday

24 hours

Wednesday

24 hours

Thursday

24 hours

Friday

24 hours

Saturday

24 hours

Sunday

24 hours

Special Offers

Mention these discounts at time of service

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$0 Down 0 payments for 12 months.

New system installation as low as Zero down, zero payments for 12 months.

Start your project now and pay nothing for 24 months. Terms and conditions apply. Financing is subject to credit approval. Financing is provided by one or more third-party lenders, not by Authority Brands.
$500 Off New AC Replacement

Save $500 on a new high efficiency system and enjoy reliable comfort year round.

Valid at participating locations. Limit one coupon per household. Coupon must be presented at time of purchase. Cannot be combined with any other offers or discounts. Some restrictions, taxes and fees may apply.
$100 Off repair

Take $100 off your repair and get your system running quickly and efficiently.

Valid at participating locations. Limit one coupon per household. Coupon must be presented at time of purchase. Cannot be combined with any other offers or discounts. Some restrictions, taxes and fees may apply.
Premium Service Plan

Premium Plan – $21.99/mo ($264/yr) • Annual A/C & heating maintenance • Standard 1" filter per visit • Thermostat batteries & programming • No standard trip/diagnostic fees • 15% discount on repairs • Up to $500 replacement credit • 2-year repair warranty • Priority scheduling • Safety & airflow inspection • Emergency response priority

Membership services listed and plan discounts vary and may change based on individual franchise location. Membership renewal period is one year. Cannot be combined with any other offer. Not redeemable for cash. Valid only at participating locations.
Heroes Service Plan

Hero Plan – $17.99/mo ($216/yr) • Annual A/C maintenance • Annual heating maintenance • Standard 1" filter per visit • Thermostat batteries & programming • No standard trip/diagnostic fees • 15% discount on repairs • Up to $500 replacement credit • 2-year repair warranty • Priority scheduling • Safety & airflow inspection • Emergency response priority

Membership services listed and plan discounts vary and may change based on individual franchise location. Membership renewal period is one year. Cannot be combined with any other offer. Not redeemable for cash. Valid only at participating locations.
Basic Service Plan

Basic Plan – $15.99/mo ($192/yr) • Annual A/C or heating maintenance • Standard 1" filter per visit • Thermostat batteries • 2-year repair warranty • Standard scheduling • Safety & airflow check

Membership services listed and plan discounts vary and may change based on individual franchise location. Membership renewal period is one year. Cannot be combined with any other offer. Not redeemable for cash. Valid only at participating locations.

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Newcastle HVAC Services You Can Count On

Our customers love what we do because we treat them like the neighbors they are to us. While we carry the One Hour name, we're an independently owned and operated business with a personal investment in the local community. We back our work with a 100% satisfaction guarantee, provide StraightForwardPricing® guides for your benefit, and will pay you back for being even one minute late to an appointment.

We have a reputation for being punctual, friendly and knowledgeable.

We have a reputation for being punctual, friendly and knowledgable

(103 reviews)

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Devon was always prompt with responding to my questions and keeping me informed. Nick the installer was the kindest hardworking young man explaining everything sometimes twice and letting me and hubby know why it took another half day to complete the project.

Liz

6 months ago

Update - The team reached out and immediately helped us out. Very impressed that they took my feedback seriously and worked on it. I appreciate the apology and their assistance. Felt like they truly cared. Appointment process was okay the first time, for follow up questions and quotes, I keep calling and emailing. The guys who came gave decent service but overall, would prefer someone who communicates better.

Karishma Sakaria

2 months ago

It’s really great to have your professional services. You’re really efficient and smart in solving problems regarding the heater issue. Thank you for your professionalism and support.

D Mike

5 months ago

I highly recommend this company. We had them service our two gas fireplaces. One needed some minor repairs which they handled without issues. They were also VERY reasonable when it came to cost and their professionalism and customer service was amazing.

Dee Mullins

2 months ago

I have lived in this country for more than 26 years, and in all that time, I have rarely come across a company that genuinely cares about its customers the way this team does. When I called on a Friday evening, they responded immediately and were available to help without hesitation. Deven and Denis were courteous, professional, knowledgeable, and incredibly helpful from start to finish. What impressed me most is that they embody both TRUST and CARE in everything they do: TRUST * T – Transparent * R – Reliable * U – Understanding * S – Service-Oriented * T – Trustworthy CARE * C – Customer-Focused * A – Accountable * R – Reasonably Priced * E – Efficient In today’s world, it is uncommon to find a company that combines exceptional service with genuine concern for its customers. Deven and Denis have earned my trust through their professionalism, honesty, responsiveness, and commitment to doing the right thing. I highly recommend them to anyone looking for a company that truly delivers on both TRUST and CARE.

Rajshree Sharma

2 months ago

Here For You

When You Need Us Most!

Yellow One Hour Heating & Air Conditioning service van with company branding and slogan.

'Round the Clock Availability

No matter the hour, you can trust One Hour to be there to help you when you get hit with the unexpected.
100% Satisfaction Guarantee

We guarantee our materials, labor, and craftsmanship for up to two years from the date of your service.
StraightForward Pricing® Guide

Before we start any work, we discuss your available options so you know exactly what you are getting and how much it will cost. No hidden fees!
Always On Time…Or You Don’t Pay A Dime!®

We understand your time is valuable, so we promise to arrive at your home within the predetermined time window that you select, or your service call is free.

Financing Available!

Prioritize your comfort without fronting the entire bill on day 1 – contact us today to learn more about financing options.

Discover Your Options

Meet the Newcastle Team

Best HVAC Team in King County.

We are a local, veteran-owned HVAC team proudly serving King County and the Eastside communities. Built on discipline, integrity, and attention to detail, our team is committed to delivering premium heating and cooling solutions with a focus on quality workmanship and customer care.

Our technicians are professionally trained, background-checked, and dedicated to doing the job right the first time. Whether it’s a routine maintenance, complex repair, or full system installation, we approach every home with respect, precision, and a problem-solving mindset.

At our core, we believe HVAC is not just about equipment—it’s about comfort, health, and peace of mind. That’s why we take the time to educate our customers, provide honest recommendations, and stand behind our work with strong guarantees.

Our mission is simple: deliver reliable comfort, build long-term relationships, and set the standard for HVAC service in our community.

HVAC Near Me In...

One Hour Heating & Air Conditioning® of Newcastle services the following communities:

Bellevue
Newcastle
Renton
Mercer Island
Medina
Clyde Hill
Hunts Point
Yarrow Point
Beux Arts Village
Newport Shores
Factoria
Newport Hills
Somerset
Cougar Hills
Lakemont
Coal Creek
Coalfield
May Creek
Kennydale
East Renton Highlands

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Servicing your entire home

Part of the Authority Brands Family

Authority Brands is the leading provider of in-home services, building brands that support the success of franchisees as well as better the lives of the homeowners we serve and the people we employ.