Heating & Cooling Systems

Determining the best type of system for your home depends on geographical location, the size and physical characteristics of your home, and the way the system will be used.

HVAC System Types

Split Systems

A split system is the most common type of heating and cooling. The furnace, which is indoors, is used as the heat source, while the air conditioning unit is outdoors and functions to cool the home. This type of system consistently and reliably heats and cools your entire home, as well as maintains indoor air quality through the use of filters inside the furnace.
Carrier_Outdoor_Unit
systems
hybrid system
hybrid system

Hybrid Systems

A hybrid system consisting of a heat pump provides both heating and cooling but with greater efficiency. This system is normally paired with a gas furnace or an electric air handler. A Heat Pump works just like an air conditioner to cool your home, which is by moving heat from inside the home to outdoors. A heat pump, however, has a reversing valve that allows it to absorb heat energy from outside air (yes, even in cold temperatures) and sends it indoors, thus supporting the heating effort for the home as well. When the weather is extra cold, the gas furnace becomes the primary heat source to ensure maximum comfort is maintained. It’s a solution that saves both energy and fuel.

Ductless Systems

Ductless systems enable you to heat and/or cool your home without invasive ductwork. They also operate quietly, have a compact design, and require minimal installation. Both Heat Pump and A/C solutions are flexible, whether you’re looking to maintain comfort in one room or multiple rooms.
Are you suffering from a hot or cold spot in your home?
Are you renovating your home?
Do you want air conditioning but can’t add duct work?
Ductless systems deliver cooling and/or heating to specific, targeted areas within the home. The installation is less invasive and can even be less expensive since these systems don’t require ductwork to distribute air. Ductless systems have an outdoor unit connected through a small hole to a compact wall-mounted unit indoors. Each indoor unit is designed to provide warm or cool air solely for the room in which it is installed. The indoor unit can be installed on a wall, in the ceiling, or on the floor. Ductless systems can be used for only one or two rooms, but they can also be expanded to make up to 8 separate climate zones in your home.
residential heating and cooling
residential heating and cooling
Air Conditioning
These flexible systems deliver targeted comfort in the indoor areas they’re placed. They also act as a zoning system by offering individual temperature control over each separate room. For example, if you want a cooler home office but a warmer bedroom, you can install a ductless unit in each room. This allows you to set different temperatures in each area depending on your comfort needs. A wireless remote makes this even easier. Not only are these units generally very energy efficient, but they also give you a much more refined level of control than you would have with a traditional duct-based system.

Heating and cooling systems come in Single-Stage, Two-Stage, and Multi-Stage options representing the levels at which they operate.

A Single stage unit means its operating speed is either on or off.
A Two-stage unit means it operates on either high or low. The low setting is adequate to meet most household comfort demands about 80% of the time, providing even temperatures. On hotter days, it can leverage the high level of operation to maintain comfort levels. Two stage systems are typically quieter and more efficient than a single stage unit.
A Multi-stage unit has a range of operation and therefore the most precise temperature control and best comfort. These variable speed units are the quietest and offer the most energy savings.

With an HVAC system, one size does not fit all. It is important to consider:

Cooling & Heating Capacity
Energy Efficiency
Air Quality
Humidity Regulation
Installation Requirements Unique to Your Home

Your Comfort Consultant will explain what these terms mean and help you identify which equipment will best suit your needs.

Air Conditioning Installation

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We promise the comfort of dependable heating, air conditioning, plumbing, and electrical services.
We promise you will feel comfortable with the people working in your home because they're knowledgeable, respectful, trustworthy, and tidy.
We promise the comfort of being offered options to help you find the right solution, at the right price.
We promise outstanding communication, service, and follow-up, so you're comfortable now and for years to come.
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It's a promise we've kept wtih thousands of homeowners across Western Washington

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Read our real customer reviews below!
Xinyang Li
Xinyang Li
22:16 14 May 22
Cool guys I dealt with today. They seem laid back and down to earth. I had an interview with them earlier today. Hopefully we can work something out.
Shawn Chance
Shawn Chance
23:42 21 Apr 22
Ben came out from G and S to perform a check and maintenance on my heating/heat pump system. Arrived on time, very polite and effecient. All is well.
Dave Stout
Dave Stout
15:56 10 Apr 22
C Becker
C Becker
21:49 07 Apr 22
They are always respectful, knowledgeable and prompt. Have used them for many years with zero complaints. Some of the new owner changes are frustrating but hopefully they will dial things in.
Kristi Cundy
Kristi Cundy
18:44 08 Mar 22
Sullivan installed two Mini-Splits in our home… bobby Baker was the salesman (extrodinare) Start to finish, “all the Sullivan Staff was GREAT”Highly recommend this Company 👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻
Les. Kay. Rose
Les. Kay. Rose
21:09 21 Feb 22
Andrew Carle
Andrew Carle
18:08 08 Jan 22
Luke Schwaigert
Luke Schwaigert
11:15 18 Nov 21
Taylor Anderson
Taylor Anderson
12:15 17 Nov 21
Always prompt response
KarenL Lindenmayer
KarenL Lindenmayer
16:11 02 Nov 21
The fellas that came, Dan & Tim, we’re professional, knowledgeable, efficient and friendly. They informed us of the process and steps involving the gas line installation. We are happy customers:)
Cherie Rezen
Cherie Rezen
20:13 30 Oct 21
Johnny came out and did a great job for us!!They were even able to schedule us quickly!!thank you so much!!
Lucinda Gardner
Lucinda Gardner
15:00 10 Oct 21
If you need the electrical done, you should call and wait for Dustin. He is professional, calm, kind and easy to work with. I was in a hurry and went with another company but things didn't work out. Dustin will take his time and do the best he can to help you out. BE PATIENT AND WAIT FOR DUSTIN!!
TRACY TRAN
TRACY TRAN
21:44 03 Oct 21
Started wit Nate the sales gentleman. He was very friend and courteous and explain everything to us of what we needed to get the work done, and gave the options to choose.Carlos and Eddie were amazing. They came on time and started working on installing our central AC. They were very professional and we couldn't be more happier.After they were done, they clean everything up , and put it back the way it was.The guys who came to clean our ductless were very efficient and professional. We will definitely be recommending this company to our friends and families.We will be using this company to maintain our AC and furnish from now on.
Lyly Graffam
Lyly Graffam
17:57 17 Sep 21
Chanelle Parton
Chanelle Parton
00:16 05 Sep 21
Our heat pump failed the night before the big heat wave back in late June. We were facing the prospect of having to search for a place to stay cool since all the HVAC companies we called gave us appointment times several days and even weeks away. We called Sullivan late Friday evening and they had a technician here Saturday morning and he fixed the heat pump in about 30 minutes. We needed a part and Arnold the technician had it in the truck! Go figure. Our external thermometer got up to 113 degrees two days later. I can't speak highly enough of this company. I can't imagine the misery and discomfort they saved us and possibly the death of my old dog from the heat. Thank you Sullivan Heating & Cooling.
Kitsap Craig
Kitsap Craig
16:37 19 Jul 21
Travis our service tech was friendly and knowledgeable, he explained everything he was doing and why. Fixed the problem and did not leave until he made sure everything was working correctly. Definitely will use Sullivan Heating and Cooling again in the future.
Kimmie Lancaster
Kimmie Lancaster
23:10 08 Jul 21
Sullivan installed our new heating system this year and worked with us so the thermostat settings are right. We have been so grateful during this time of hot temperatures we have the service. They do a great job!
Merrily Boone
Merrily Boone
19:23 30 Jun 21
My heat pump broke down unexpectedly the night before a record heat wave was expected. I called just about every HVAC company I could find and no one was willing to book an appointment for at least several days out. Most were several weeks. But Sullivan returned my after hours phone call within minutes and had a tech come to my house within a few hours and quickly made the repair. Their work was great, and their prices were fair. These guys are superheros and I can't recommend them highly enough.
Michael Johnson
Michael Johnson
19:36 27 Jun 21
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