Lennox Heat Pump Installation Nationwide | Dalton Heating & Air Alpharetta

Lennox Heat Pump Installation in Alpharetta: What to Know First

We install Lennox heat pump systems throughout Alpharetta, and most jobs are completed in one full day. A complete Lennox heat pump installation in Alpharetta typically runs $3,500 – $7,500 depending on the series, your home’s square footage, and whether ductwork needs changes. The price is in writing before any work starts, and the installation is guaranteed in writing for a full year.

Call (229) 537-2086

This page is for Alpharetta homeowners who already own a Lennox unit and need it replaced, or who are considering Lennox for a new heat pump installation. If you’re looking at a repair instead, that price range runs $150 – $650 depending on what failed. Call (229) 537-2086 and you’ll get a live person, day or night.

How Lennox Products Fail – and How We Fix Them

• Lennox XP14/XP16 outdoor units – reversing valve sticking. The reversing valve is the part that switches the system between heating and cooling. On Lennox XP14 and XP16 series units in Alpharetta, we regularly see this valve stick after a few Georgia summers of cycling between modes. The symptom is a system that cools fine but won’t heat, or the other way around. When this happens during a heat pump installation, we replace the valve with an OEM part rather than a universal aftermarket one. The aftermarket valves sometimes don’t seat correctly on Lennox’s specific port spacing, which leads to a second failure within a year.
• Lennox Signature Series (XP25) – variable-speed inverter board faults. The XP25 is a high-end variable-speed heat pump. Its inverter board controls the compressor speed, and in Alpharetta’s humidity, we see these boards fail after power surges or brownouts. The symptom is a unit that trips its own breaker or runs flat-out with no modulation. Lennox’s board is expensive. We test the board before replacing it because the real cause on roughly a third of these calls is a failing capacitor upstream, which costs a fraction of the price.
• Lennox Merit Series (ML14/ML17) – defrost sensor failures. The Merit series is Lennox’s entry-level heat pump, and it’s common in Alpharetta townhomes and smaller ranches. During our colder months, the defrost sensor on Merit units tends to read frost incorrectly. The unit either won’t enter defrost cycle and ices over, or it enters defrost constantly and wastes power. On a heat pump installation where we’re replacing a Merit unit, we always check the new unit’s defrost calibration during our startup test. Many companies skip that step and the homeowner gets a loud, banging defrost cycle in January.
• Lennox Elite Series (EL18/EL296) – indoor coil corrosion. The Elite line pairs with high-efficiency indoor coils. Alpharetta’s summer humidity, combined with the acidic condensate those coils produce, eats through the copper tubing faster than Lennox’s own maintenance literature suggests. The symptom is a slow loss of refrigerant every season, with no visible leak. When we install Elite-series heat pumps, we coat the coil pan and check airflow across the coil so condensation doesn’t sit and accelerate corrosion. This is a nuance you won’t find in Lennox’s installation manual.
• Lennox communicating systems (iComfort) – thermostat compatibility errors. Lennox’s communicating heat pumps use a proprietary thermostat protocol called iComfort. When an Alpharetta homeowner replaces just the outdoor unit or just the thermostat with a non-communicating part, the system throws error codes or runs at a fixed speed. We make sure every component matches – communicating to communicating – so the system actually delivers the efficiency rating it was sold with.

Our Lennox Heat Pump Installation Process

1. 1
   You call (229) 537-2086. A live person answers. We schedule a window that works for you, and the technician arrives inside that window. You know who’s coming before they arrive because every tech is background-checked and uniformed.
2. 2
   We measure the house. Not a guess. We run a load calculation on the square footage, window orientation, insulation levels, and Alpharetta’s climate data. A poorly sized heat pump will short-cycle and run your electric bill up every August in Windward and similar subdivisions.
3. 3
   We write the price. Before any work starts, you get a written price for the full installation. No door price. No “we discovered a problem” markup later. The price covers equipment, labor, refrigerant, electrical work, and cleanup.
4. 4
   We decide on parts – OEM or quality aftermarket. For Lennox-specific components like the reversing valve or communicating boards, we use OEM parts. For universal components like capacitors and contactors, we use quality aftermarket brands when they match or exceed spec. We explain every part choice before ordering.
5. 5
   We install, test, and document. The crew runs the system through heating, cooling, and defrost cycles. We check refrigerant charge, airflow, and electrical draw. You get a written report of what was installed and what we measured.
6. 6
   We guarantee it in writing. Every Lennox heat pump installation includes a full-year written guarantee. If anything fails in that year, we return at no charge. That’s not an upgrade. It’s the way every job ends.

What Lennox Heat Pump Installation Costs in Alpharetta

Here’s the straight math for Alpharetta homes:

• Merit Series (ML14/ML17) heat pump installation: $3,500 – $5,000, depending on tonnage and ductwork condition.
• Elite Series (EL18) heat pump installation: $5,000 – $6,500. Higher efficiency rating, better humidity control for Alpharetta summers.
• Signature Series (XP25) heat pump installation: $6,000 – $7,500. Variable-speed, quietest operation, best for larger homes.

What moves the price: the size of your home, whether your existing ductwork needs sealing or replacement, electrical panel capacity, and whether you’re switching from a gas furnace to an all-electric heat pump. If your current Lennox unit needs a repair instead, most heat pump repairs run $150 – $650. Call (229) 537-2086 for an exact written quote. Estimates are free.

Why Alpharetta Homeowners Call Dalton Heating & Air Alpharetta for Lennox Work

We service Lennox systems as an independent Lennox service provider, and we carry the parts that fail most often in Alpharetta’s climate – reversing valves, defrost sensors, and communicating boards. The tech who shows up at your door has worked on Lennox Merit, Elite, and Signature series units long enough to know their quirks. Marco Benitez and his crew put in years of field work across the metro area, and the company has operated under The Garrison Standard since 2003. That means the price is in writing before any wrench turns, the work carries a 365-Day Done Right Promise, and if the installation fails within a year, we come back at no charge. We also handle Carrier and Trane systems, so if your home has a mixed setup, one crew covers it.

The Garrison Code is simple: arrive inside the window, price in writing before starting, do the job by the book, leave the site clean, and stand behind the work for a full year. If it’s not done right, we make it right.

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