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Get your free estimateLennox HVAC in Miami, FL | Dalton Heating & Air Miami
We run independent Lennox service and repair across Miami for homeowners tired of dealership runarounds. The one thing that separates our Lennox work here: we know which coils, drain pans, and contactors fail first in salt air and 73 percent average humidity, and we quote the fix in writing before touching the unit. If your Lennox is short-cycling, leaking, or dead on a Saturday in August, call (850) 754-6042 and you’ll get a live person. We carry OEM Lennox parts and local-warehouse aftermarket equivalents so most Miami jobs finish same-day.
Why Miami Residents Choose Us for Lennox Service
Marco Benitez has been running service calls across Miami for well over a decade, including plenty of jobs in Coral Gables where older homes and high humidity make refrigerant management and duct sealing genuinely tricky work. He built this crew on a simple rule: show up, put the price in writing, explain what failed in plain English, and stand behind the repair for a full year. That’s The Garrison Standard, and every Dalton Heating & Air Miami tech works under it since 2003.
We’re not a Lennox dealer. That matters. A dealer has sales quotas. An independent shop like ours has one job: figure out what’s actually wrong with your Lennox and fix it without padding the ticket. Our techs have torn down and rebuilt Lennox compressors and air handlers in Miami’s salt air since before Lennox switched to their Quantum coil line, so we know which Series and Elite evaporator coils fail here and how to make them last. We offer full Lennox sales & service support without the upsell pressure.
Styles & brands we work with





Common Lennox HVAC Problems We Solve in Miami
Here’s what we see most often on Lennox equipment across the Miami service area:
- XC21 compressor terminal burnout from brownouts and salt-air contactor pitting. Miami’s coastal substations get hammered during storm season, and voltage dips cook compressor terminals. We replace the contactor with an OEM Lennox unit and check line voltage before condemning the compressor.
- Elite and Merit evaporator coil pinhole leaks. Miami’s chloride-laden condensate eats away at the copper-aluminum joint where the coil meets the fins. We see this leak pattern on Lennox coils that are only four or five years old, especially in homes without a whole-house dehumidifier.
- Quantum coil drain pans rusting through in 7 – 9 years. If your Lennox air handler sits on a slab floor without a secondary pan or safety float switch, the condensate pools and rots the pan out. We stock replacement pans with marine-grade coating for exactly this Miami failure.
- Variable-speed blowers seizing after extended off periods. Miami humidity clogs the sealed bearing lubricant in Lennox variable-speed motors. If you shut the system down for a few winter weeks, the blower may not spin up when you restart it. We clean and re-lubricate where possible, or swap in a matched aftermarket motor with a local-warehouse guarantee.
- Mold and bio-growth in the evaporator coil. Systems in Miami run 3,000+ hours a year, and the coil sits wet from May through October. That’s a breeding ground. We pull and clean coils, treat the drain line, and install UV or dehumidification where the house needs it.
Lennox Service in Miami: What Local Conditions Mean for Your Equipment
In Little Havana’s 1950s concrete-block bungalows, original 4-inch slab ducts sweat so badly behind registers that Lennox evaporator coils sitting on slab floors rust out their drain pans every three rainy seasons. This failure pattern shows up in Miami’s pre-1960 slab-on-grade housing stock more than anywhere else we’ve worked. The 4-inch ducts can’t move enough air for a modern Lennox system, so condensation builds, backs up, and the drain pan sits in standing water. We check for rusted-out pans under those slab coils after every wet season, because that’s when the damage shows. If you own one of these older Miami homes and your Lennox is leaking water onto the floor, call before the pan rusts through and floods the closet.
Lennox Models & Products We Service in Miami
We work on every major Lennox line: XC21, Elite Series, Merit Series, and Signature Series. That covers high-efficiency condensing units, air handlers, evaporator coils, and Miami Heat Pump Installation. For parts, we install genuine Lennox OEM capacitors, contactors, and control boards where they affect safety or warranty. Marco only approves aftermarket motors and pressure switches that match Lennox specs and carry local-warehouse guarantees. That keeps your repair moving fast in Miami without compromising the equipment.
Our Lennox work includes AC repair, full AC installation, and dehumidifier install for homes that need help pulling moisture out of the air. We also service Lennox mini-splits, including multi-zone setups for condos.
See the difference
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After
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Before
AfterLennox Service Pricing in Miami
Here’s what Lennox work runs in Miami. These are the prices we quote before touching your system:
| Service | Miami Price Range |
|---|---|
| AC Repair | $175 – $765 |
| AC Installation | $4130 – $8850 |
| Tune-Up | $95 – $235 |
| Dehumidifier Install | $250 – $980 |
What drives the cost: the part, the refrigerant charge, and whether the failure damaged additional components. Every estimate is free, in writing, and includes exactly what we found and what it costs to fix. Call (850) 754-6042 for a free estimate on your Lennox system.
Serving Miami, FL - Our Local Coverage Area
We’re based in the Miami area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs – Lennox HVAC in Miami
The combination of Miami’s chloride-laden condensate and 73 percent average humidity eats through the copper-aluminum joint where the coil meets the fins. It’s not a manufacturing defect; it’s salt air and moisture doing what salt air and moisture do. We can patch a small leak, but if the coil has leaked once, expect it to leak again. Call (850) 754-6042 and we’ll tell you if it’s worth repairing or replacing.
At 12 years old in Miami salt air, we push for full condensing unit replacement. The compressor is the most expensive single part, and putting a new compressor on a 12-year-old coil and cabinet is a half-measure that’ll cost you again in two years. We’ll give you a written quote for both options so you can decide with real numbers.
Most Little Havana slab bungalows benefit from one. The original 4-inch ducts can’t pull enough moisture out of the air, so the evaporator coil runs wet and the house never feels dry. A dehumidifier takes that load off the AC and extends the life of the coil. We install them regularly in Miami’s older slab homes.
Because Miami’s humidity doesn’t care whether you run the heat. Condensation forms inside the furnace cabinet during the off season, and the salt air accelerates rust on the heat exchanger and burners. We see this on Lennox Merit furnaces in older homes with unconditioned closets or garages. A dehumidifier or better cabinet sealing helps, but at a certain point the rust wins. Call for an inspection.
Yes, in many cases. We’ve installed through-wall and packaged Lennox units where condo boards restrict balcony condensers. The building’s rules dictate the installation type, not your comfort. We’ll check the condo requirements and quote a setup that complies. Call (850) 754-6042 for an exact quote on your condo.
Service Areas Near Miami
We cover all of Miami, plus the surrounding communities. That includes Lennox service in Miami Gardens, Lennox service in Kendall, North Miami, Tamiami, and Coral Gables. If you’re anywhere in Miami-Dade, call and we’ll get a tech to you.
Book Your Lennox Service in Miami Today
If your Lennox system is down or leaking in this Miami heat, call (850) 754-6042 right now. We answer live 24/7, and we can usually get a tech out same-day for Miami AC Repair. The price is in writing before we start, and the repair is guaranteed for a full year.
Written by Marco Benitez, Owner at Dalton Heating & Air Miami, serving Miami since 2003. Tell me what it’s doing, I’ll tell you what it costs – in writing, before I touch it.