What we install
Lennox furnace installation
A new gas furnace, sized for your house.
- Old furnace removed
- Sized for your house, not guessed
- Venting and gas line checked
- Thermostat set up and tested
- Permit and inspection handled
Lennox AC installation
Central air added or replaced.
- Matched to your furnace and ducts
- Refrigerant lines and charge set correctly
- Outdoor unit set level on a pad
- Drain line and airflow checked
- Permit and inspection handled
Lennox heat pump installation
Heating and cooling from one system.
- Replaces an old AC, or furnace and AC
- Sized for Puget Sound winters
- Backup heat set up where needed
- Thermostat set up for heat pump mode
- Permit and inspection handled
Replacing an old system
Furnace and AC both at the end?
- One visit to price both paths
- Repair numbers if it is still worth fixing
- Replace together or one at a time
- Exact price before any work
- You approve it first
Thinking about a new Lennox?
Book an in-home quote. A technician reaches out within 1 business hour, and you get the exact price before any work.
Book a Lennox Quote60 seconds online · or call (253) 766-4822
How it works
- 1
Book an in-home quote. Tell us what you have now and what you want. Photos of the old unit help.
- 2
We size it for your house and show you the options. Merit, Elite or Signature, priced side by side.
- 3
You approve the exact price first. Then we install, handle the permit and inspection, and set up the thermostat.
Where we install Lennox systems
From our base in Covington.
King County
Covington, Kent, Renton, Maple Valley, Black Diamond, Auburn, Enumclaw, Federal Way, Des Moines, Pacific, Algona, Burien, SeaTac, Tukwila, Issaquah, Newcastle, Snoqualmie, North Bend, South Seattle
Pierce County
Tacoma, Puyallup, Lakewood, Sumner, Bonney Lake, Lake Tapps, Orting, Buckley, Graham, Spanaway
Not on the list? Book it anyway and a technician confirms within 1 business hour.
Why homeowners call us
- You approve the price first. Exact price upfront, before any work starts.
- We answer 24/7. A technician reaches out within 1 business hour.
- 500+ jobs done by 4.9★ rated technicians. Licensed & insured.
- Fixed right, guaranteed. If it’s not right, we make it right.
Lennox installation questions
Can you get Lennox equipment?
Lennox sells through its own stores rather than the regular supply houses, so we confirm availability for your model when we quote. If another system would serve your house better, we tell you why.
Which Lennox line should I get?
Lennox sells three lines: Merit, Elite and the top Signature line. We size the system for your house first, then price the lines that fit so you can compare.
How long does a Lennox installation take?
A straight furnace or AC replacement is usually one day. Switching to a heat pump, or replacing the furnace and AC together, can take one to two days. We give you the schedule with the quote.
Do I need to register the Lennox warranty?
Yes. Lennox gives you 60 days from installation. Registered Merit and Elite equipment carries 10 years of parts coverage; unregistered drops to 5. Signature carries 12 registered, 10 if not. Lennox’s separate extended plan needs a participating Lennox dealer, and we are not one, so the standard warranty is what applies.
Do you handle permits?
Yes. We pull the permit and schedule the inspection as part of the install.
How do I get my exact price?
Book an in-home quote online or call. A technician reaches out within 1 business hour, and you get the exact price before any work starts. You approve it first.
Get your Lennox quote.
Exact price upfront, before any work starts.
Book a Lennox Quote60 seconds online · or call (253) 766-4822
Next Phase Heating & Cooling is an independent HVAC contractor, not a Lennox dealer. The Lennox name is used only to identify the equipment we install.
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