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Get your free estimateLennox Heat Pump Installation in Santa Clarita: What to Know First
Lennox heat pump installation in Santa Clarita typically runs $3,500 – $7,500 depending on the series, the size of your home, and whether existing ductwork or electrical needs updating. We are an independent Lennox service provider, which means we install and service Lennox equipment without being tied to any manufacturer’s sales quotas. Most installations are scheduled within 5 – 10 business days after the written estimate is signed, and the price you see on paper is the price you pay, no exceptions.

This page is for homeowners in Santa Clarita who own a Lennox system, are considering one, or have been told by another company that their heat pump needs replacing and want a straight answer about what that actually looks like. If you want a free, written estimate, call (661) 621-3712 and ask for the Lennox heat pump installation line.
Key Takeaways:
- Lennox heat pump installation in Santa Clarita costs $3,500 – $7,500, written in advance
- As an independent Lennox provider, we quote the job without manufacturer sales pressure
- Marco Benitez leads the crew; he has been turning wrenches on residential HVAC for over two decades
- Every installation carries a 365-Day Done Right Promise in writing
- Free estimates; call (661) 621-3712
How Lennox Products Fail – and How We Fix Them
Lennox builds a solid heat pump, but in Santa Clarita’s heat and valley dust, certain failure patterns show up more often than others. Here are the ones we see most across Valencia, Canyon Country, Saugus, and Newhall:
- Reversing valve sticking on SL25XPV and XP25 units. The reversing valve is the part that switches your heat pump between heating and cooling. On higher-end Lennox variable-speed units, we occasionally see the valve hang mid-cycle after three to five Santa Clarita summers. The fix is a valve replacement or, in older units, a valve rebuild. We diagnose it by testing the solenoid and refrigerant pressures, and we always price the job before touching anything.
- Outdoor coil corrosion on ML14XP and EL18XPV units. Heat pump coils sit outside, and Santa Clarita’s high UV plus occasional Santa Ana winds carrying fine dust means coils pick up micro-scratches that lead to pinhole leaks. A leaking outdoor coil is one of the most common reasons a heat pump loses charge. We pressure-test, find the exact leak point, and give you the option of coil replacement or, if the unit is older, an honest conversation about whether repair still makes sense.
- Defrost control board failures on XP20 and XP21 owners around Saugus. Lennox heat pumps run a defrost cycle to melt ice off the outdoor coil in winter. When the defrost board fails, the unit never enters defrost and the coil ices over. The symptom is a heat pump that runs constantly in winter but blows lukewarm air. We replace the board and run a full defrost-cycle test before we leave.
- Compressor capacitor failures on base-model Lennox units. The capacitor stores the electrical charge to start the compressor and fan motor. In Santa Clarita’s heat, capacitors wear out faster, especially on units with high runtime hours. The good news: this is usually a $150 – $450 repair, not a replacement, and it takes about an hour.
- Thermostat communication errors on newer Lennox iComfort systems. Lennox’s iComfort thermostats talk to the heat pump using a proprietary protocol. If a wire gets loose, a firmware update fails, or a homeowner tries to swap in a generic thermostat, the system loses communication and the heat pump locks out. We reset the communication bus, check wiring at both ends, and if the thermostat itself has failed, we replace it with an OEM or compatible unit that works with the existing system.
Styles & brands we work with







Our Lennox Heat Pump Installation Process
Here’s how a Lennox heat pump installation goes with us, from the first call to the final walkthrough:
- 1
Call and schedule a free on-site estimate. A live person answers, day or night. We set a window and we arrive inside it.
- 2
Walk the property and measure the load. We check square footage, ceiling height, window orientation, insulation levels, and existing ductwork. No guesswork, no “same size as before” assumptions. We use the actual Manual J calculation.
- 3
Written price before any work starts. Marco Benitez puts the full install price on paper, parts and labor, no hidden add-ons. You sign nothing until you see the number.
- 4
Installation day. The crew arrives in uniform, drops floor protection, and starts the teardown. We handle electrical, refrigerant recovery, disposal of the old unit, and the new Lennox equipment setup.
- 5
System testing. Once the new heat pump is in, we run the full startup sequence: refrigerant charge check, airflow test, thermostat calibration, heating and cooling mode verification. We do not leave until the system runs correctly in both modes.
- 6
Cleanup and written guarantee. The site is left as clean as we found it. You get the written installation guarantee, the warranty paperwork, and the 365-Day Done Right Promise.
See the difference
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AfterWhat Lennox Heat Pump Installation Costs in Santa Clarita
Lennox heat pump installation in Santa Clarita runs $3,500 – $7,500. Where your job lands inside that range depends on the unit series, the size of the system, and how much of the existing setup we can reuse.
- Base-model Lennox ML14XP heat pump, 2 – 3 ton: $3,500 – $4,800
- Mid-range Lennox EL18XPV heat pump, 3 – 4 ton: $4,800 – $6,200
- Premium Lennox XP25 or SL25XPV variable-speed, 4 – 5 ton: $6,200 – $7,500
- Add-ons like new refrigerant linesets, electrical upgrades, or smart thermostat replacement: $300 – $1,200 depending on scope
What moves the price: the unit itself, the length of the lineset run, whether your electrical panel has capacity, and whether the existing ductwork passes an airflow test. Every quote is line-itemed so you can see exactly what you’re paying for.
Estimates are free. Call (661) 621-3712 and we’ll schedule the on-site visit.

Why Santa Clarita Homeowners Call Dalton Heating & Air Santa Clarita for Lennox Work
We’ve been doing HVAC work under The Garrison Standard since 2003, and the rules are simple. We show up inside the window we set. The price is in writing before the first bolt turns. The job is done by a background-checked, uniformed technician who actually knows Lennox equipment. And every installation carries a written 365-Day Done Right Promise: if something’s not right, we make it right, for a full year, not a 30-day window.
Most of our crew can service all nine major residential brands, but Lennox is one we see a lot across Santa Clarita, and we know the quirks. Carrier and Trane are in our wheelhouse too, so if you’re comparing equipment, we can give you a straight answer on how they stack up without steering you toward one brand for the wrong reasons. That’s part of The Garrison Code: do the job by the book, leave the site clean, stand behind the work.
FAQs
No, not when the installation is done correctly. Lennox warranties cover parts, not labor; what matters is that the unit is installed to code, registered with Lennox, and that the installing contractor documents the startup. As an independent Lennox service provider, we handle all registration and startup documentation for you, and we keep records on file. We do not install equipment in a way that puts your warranty at risk.
Most Lennox heat pump installations are scheduled within 5 – 10 business days after you approve the written estimate. We’re not a same-day installation company; we don’t cut corners on load calculation, electrical checks, or permitting. If your existing heat pump is down and you need cooling now, call us at (661) 621-3712 and we’ll talk about temporary options. The written estimate is free.
The honest answer depends on three things: the age of the unit, the cost of the repair, and the condition of the rest of the system. As a rule of thumb, if the repair costs more than half the value of a new unit and the system is over 10 years old, replacement usually wins. If it’s a $200 capacitor on a 6-year-old unit, repair wins. We’ll walk you through the numbers on site, in writing, so you can make the call without pressure.
We use OEM Lennox parts on any repair that is covered under warranty, and we recommend OEM for critical components like reversing valves, defrost control boards, and compressor electrical. For out-of-warranty, non-critical items like capacitors and contactors, we offer quality aftermarket parts if you want to save money, and we always tell you which one is going in before we do the work. Price on paper before the first bolt turns, that’s how we work.
Yes. We complete the Lennox product registration, file the startup documentation, and give you copies of everything. If a warranty claim comes up later, we handle the conversation with Lennox on your behalf. You never have to sit on hold with a manufacturer to figure out what’s covered.
For a free Lennox heat pump installation estimate in Santa Clarita, call (661) 621-3712. A live person answers, we set a window, and the price is in writing before any work starts.
Written by Marco Benitez, Owner & Lead HVAC Technician, Dalton Heating & Air Santa Clarita at Dalton Heating & Air Santa Clarita, serving Santa Clarita and nearby areas.