Lennox HVAC Service Nationwide | Dalton Heating & Air Hempstead

Why Hempstead Homeowners Choose Lennox HVAC

Dalton Heating & Air Hempstead provides independent Lennox in Hempstead HVAC repair, service, and installation throughout the area. We’re not a Lennox factory branch, and we don’t pretend to be. We’re a Garrison Partners company that has trained our technicians specifically on Lennox communicating systems, variable-speed inverter platforms, and the failure patterns those units actually develop in this climate. If you own a Lennox furnace, heat pump, or air conditioner in Hempstead, call (516) 559-4840 for service from a crew that knows these machines down to the board level.

Call (516) 559-4840

What separates our Lennox work from a generic HVAC call is simple: we diagnose the proprietary software and sensor logic that other crews misread. A Lennox XC25 throwing a soft-lockout code is not the same as a Goodman gas pack with a bad contactor. The tools, the training, and the parts strategy are different. And in Hempstead’s housing stock, where you find everything from 1920s steam-heat colonials to 1960s capes with retrofitted central air, that difference shows up fast.

We service the full Lennox residential line: Signature, Elite, and Merit. That includes variable-capacity XC25 and XP25 units, the EL296V and ML180 furnace families, and the SLP99V modulating gas furnace. We install Lennox OEM parts on sealed-system and communicating components, and we stand behind every repair with a written guarantee for a full year. If it fails in that window, we come back at no charge.

Why Trust Dalton Heating & Air Hempstead for Your Lennox HVAC?

Marco Benitez, owner of Dalton Heating & Air Hempstead, started his trade training at Los Angeles Trade-Technical College before spending nearly three decades working HVAC across the Northeast. He has serviced Hempstead homes for years, including the older residential blocks around Hempstead Lake State Park where aging ductwork and undersized equipment tend to show up together. His approach to Lennox equipment is the same one he applies to every job: figure out exactly what the system needs, explain it in plain terms, and put the price in writing before any work starts.

Our technicians train specifically on Lennox iComfort communicating thermostats, the S30 and E30 platforms, and the variable-speed inverter logic that drives the Signature and Elite lines. That matters because a Lennox system does not fail the way a single-stage unit fails. When an XC25 drops offline with a 292 code, the problem could be a failing DC bus capacitor on the inverter board, a communication dropout between the stat and the air handler, or a refrigerant charge issue. A tech who has not seen these units up close will guess. We don’t guess.

Every Lennox job we take in Hempstead follows The Garrison Code: arrive inside the stated window, put the price in writing before starting, do the work by the book, leave the site clean, and stand behind it for a full year. That’s the Garrison Standard that has governed this company since 2003. No exceptions, no fine print.

Common Lennox HVAC Problems We Fix in Hempstead

• Inverter board failures on XC25/XP25 Signature units. These variable-capacity systems throw soft-lockout codes that a generic tech often misreads as a compressor failure. The real culprit is usually a swollen capacitor on the inverter control board. In Hempstead’s salt-air environment, especially in homes south of Hempstead Turnpike, that board takes more electrical stress than it would inland. We stock Lennox OEM boards for fast turnaround.
• iComfort S30 thermostat communication dropouts. The S30 talks to the indoor air handler over a four-wire digital bus. When that signal drops, you get a no-heat or no-cool call even though the equipment itself is fine. This is common in older Hempstead homes where thermostat wiring was originally pulled for a simple mercury switch. We re-pair the stat, check the bus voltage, and replace the wiring if it has degraded.
• Evaporator coil leaks on Elite and Merit condensers. Lennox Elite XC16 and Merit ML14XP1 units from roughly 2010 to 2016 run R-410A at high pressure. By year ten to fourteen, the indoor evaporator coil commonly develops pinhole leaks, especially in Hempstead’s humid summers where the coil runs wet for months at a time. We pressure-test with nitrogen before condemning a coil, and we replace it with a Lennox OEM coil when the sealed system is still in good shape.
• SLP99V inducer motor bearing whine at low fire. The SLP99V modulating furnace runs its inducer at low RPM most of the season. Over time, the bearings wear and produce a whine that comes and goes with the firing rate. Less experienced techs sometimes condemn the gas valve or the control board. We pull the inducer, check the bearings, and replace the motor with the OEM part when it is failing. In Hempstead’s damp basements, this failure shows up sooner than the manufacturer’s average lifespan suggests.
• Capacitor failures across all lines. Hempstead’s summer voltage swings on the older village grid are hard on run capacitors. We replace these with quality aftermarket capacitors when appropriate, test the compressor and fan amp draw after the swap, and verify the system is actually cooling before we leave.

Lennox Parts & Our Repair-vs-Replace Approach

On any Lennox system, the parts decision matters. Sealed-system components and communicating electronics get genuine Lennox OEM parts. That includes inverter boards, ECM motors, iComfort thermostats, and evaporator coils. The firmware on these parts is matched to the system, and a generic substitute can cause communication errors or void what remains of your warranty. Universal items like capacitors and contactors get high-quality aftermarket parts, which are functionally identical and half the cost.

We stock the most common Lennox OEM parts for Hempstead service calls: XC25 and XP25 inverter boards, SLP99V and EL296V inducer motors, iComfort S30 thermostats, flame sensors, ignitors, and pressure switches. That means most repairs happen in one visit, not two.

When a Lennox compressor or heat exchanger fails after twelve or more years, we walk you through the repair cost versus a new high-efficiency replacement. No pressure, no sales script. Just the numbers, in writing, so you can decide. Call (516) 559-4840 and we will give you an honest read on whether that unit is worth saving.

Our Lennox Service Process – Step by Step

1. 1
   Diagnosis. We arrive inside the window, in uniform, and start by asking you what the system has been doing. Then we check the iComfort or conventional thermostat for error codes, verify line voltage, and inspect the air handler, condenser, and accessible duct runs. For communicating systems, we connect to the unit’s diagnostic port and read the actual stored fault history, not just what the stat is displaying now.
2. 2
   Written price. Before any work starts, you get a written quote showing the exact repair, the part number if we are replacing a component, and the total labor. If it is a capacitor, you see the capacitor price. If it is an inverter board, you see the board number. No verbal estimates, no door pricing.
3. 3
   Repair or installation. We use Lennox OEM parts for anything sealed-system or communicating. The work is done by a background-checked technician who services Lennox equipment regularly, not a trainee learning on your system.
4. 4
   Test and verify. After the repair, we cycle the system through full heat and cool modes where applicable, verify refrigerant pressures and temperature split, and confirm the iComfort stat is communicating cleanly with all components. For a variable-speed unit, we watch it modulate through multiple stages before we call it done.
5. 5
   Warranty in writing. Every repair comes with a written one-year guarantee. If the same part fails within 365 days, we return and make it right at no charge. That is the 365-Day Done Right Promise, and it applies to every Lennox service call we run in Hempstead.

Lennox Products We Service & Install in Hempstead

We work on the complete current and recent Lennox residential lineup. That includes the Signature Collection XC25 and XP25 variable-capacity air conditioners and heat pumps, the Elite Series XC16, XC20, EL296V, and EL18XPV, and the Merit Series ML14XP1, ML180, and ML196. On the heating side, we service the SLP99V variable-speed gas furnace, the EL296V two-stage furnace, and the compact ML180. We install new Lennox systems where the application calls for it, including high-efficiency AC up to 18 SEER and communicating furnace and heat pump packages. In Hempstead’s older homes, we often pair a Lennox heat pump with a ductless mini-split where return air is poor and ductwork would be impractical.

We Also Service These Brands

Dalton Heating & Air Hempstead is not a single-brand shop. Our technicians carry factory training for Carrier, Trane, Goodman, Rheem, York, Daikin, Bryant, and American Standard, plus Lennox. That matters when you have a Lennox AC paired with a Carrier furnace in the same forced-air system, which we see regularly in Hempstead’s older retrofitted homes.

FAQs – Lennox HVAC Service in Hempstead

Book Your Lennox Service in Hempstead, NY

If your Lennox system is acting up, call (516) 559-4840. A live person answers, 24/7. We will schedule a diagnostic, show up inside the window, and put the repair price in writing before a single part is touched. Hempstead homeowners get the same treatment every time: a technician in uniform, a written guarantee, and a job done right or made right within 365 days.

Written by Marco Benitez, Owner at Dalton Heating & Air Hempstead, serving Hempstead since 2003.