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Get your free estimateWhy Yonkers Homeowners Choose Lennox HVAC
Halden Heating and Air Yonkers provides independent Lennox in Yonkers HVAC repair, service, and installation across Yonkers, NY, from Park Hill to Crestwood and every neighborhood in between. We work on the full Lennox lineup, including original G26 furnaces still heating prewar apartment buildings and current Signature Series SLP99V modulating furnaces with iComfort thermostats. We’re not a Lennox dealer and we don’t have factory quotas, which means we recommend what actually makes sense for your home and your budget, not what pushes a sales target. Call (838) 213-7827 any time for Lennox service in Yonkers with a written price before any work starts.

Why Trust Halden Heating and Air Yonkers for Your Lennox HVAC?
Lennox systems, especially the variable-capacity Elite and Signature lines, don’t respond well to guesswork. Our techs have spent years learning the diagnostic sequences on communicating systems: reading iComfort S30 error codes, verifying inverter board communication handshakes, and tracing low-voltage wiring faults that generic HVAC companies miss. Andre Fuller, our owner, learned the trade at Los Angeles Trade-Technical College and has been keeping Yonkers homes comfortable for years, including plenty of calls near Getty Square where older buildings keep things interesting. He’s the first to admit that one early install humbled him, and that’s exactly why he insists every tech explains what’s wrong, what it costs, and why before anyone picks up a wrench. We use genuine Lennox OEM parts for critical components like gas valves, heat exchangers, and inverter boards. For straightforward wear items like capacitors and blower wheels, we’ll tell you honestly when a quality aftermarket part gets the job done for less. Every repair carries a written guarantee, and if it fails within the coverage window, we come back at no charge. That’s the standard we hold ourselves to on every Lennox job in Yonkers.
Styles & brands we work with







Common Lennox HVAC Problems We Fix in Yonkers
- Inverter board failures on XC20 and XC25 outdoor units. Yonkers hillside neighborhoods with overhead power lines see frequent voltage spikes during summer storms. Those spikes hit Lennox variable-capacity outdoor units hard, often taking out the inverter board. The symptom is usually a unit that won’t start or runs at full speed only. We replace these boards with genuine Lennox OEM parts because aftermarket boards rarely survive the communication handshake on variable-capacity systems.
- Inducer motor bearing noise and pressure switch lockouts on G26 and early G61 furnaces. Those furnaces are still everywhere in Yonkers, especially in homes built between 1900 and 1970. When the inducer motor bearings wear, you’ll hear a grinding or whining sound before the pressure switch trips and the furnace locks out. It’s a classic failure pattern on these models, and it’s one we diagnose quickly because we’ve seen it hundreds of times.
- Clogged condensate traps and secondary heat exchanger corrosion on EL296V and other 90%+ furnaces. Yonkers humidity combined with skipped annual maintenance creates condensation that sits in the trap and promotes corrosion. If you see water pooling around the base of your Lennox furnace, the trap is likely clogged and the secondary heat exchanger may already be compromised. This is why we push annual tune-ups hard, and it’s a $80 to $200 visit that catches a $600 to $900 repair before it happens.
- iComfort S30 thermostat communication dropouts with E120 and E180 error codes. On newer modulating systems, the thermostat talks to the furnace and outdoor unit constantly. When that communication drops, you get error codes and a system that runs erratically or not at all. We traced an E180 fault on a Yonkers homeowner’s XC20 heat pump last week to a corroded low-voltage splice near the outdoor unit. Two months of intermittent shutdowns. We stripped back the run, installed a sealed junction box, re-paired the thermostat, and verified full modulation from 25% to 100% before leaving. No parts replaced, just a permanent fix to a wiring failure the factory diagnostic code couldn’t isolate.
- Gas smell on first startup in the fall on ML196E and other standard-efficiency Lennox furnaces. A faint gas odor when the furnace first fires up after sitting all summer is usually residual gas in the burner area, and it dissipates within seconds. But a persistent smell means a real issue: a cracked heat exchanger, a failing gas valve, or a leaking manifold. If you smell gas and it doesn’t stop within a minute or two, turn the furnace off and call us. This is not a wait-and-see situation.
Lennox Parts & Our Repair-vs-Replace Approach
Here’s the honest math we walk every Yonkers homeowner through. A genuine Lennox OEM inverter board for an XC25 runs on the pricier side, and installation puts the total repair well into the higher end of our $150 to $700 furnace or $150 to $650 AC Repair range. On a unit that’s already 12 or 15 years old and out of warranty, that might not be the smartest investment. We’ll tell you that. On a 6-year-old SLP99V, that same repair makes total sense because the system still has years of life left and you’re not replacing a modulating furnace for $5,000 plus. For critical components, gas valves, heat exchangers, inverter boards, we use genuine Lennox OEM. For capacitors, thermocouples, blower wheels, and contactors, quality aftermarket parts work fine and save you real money. We keep common Lennox components stocked locally so most repairs in Yonkers happen same day or next day, not after a week of waiting on a warehouse shipment. Call (838) 213-7827 and we’ll give you a written price before any work starts.
Our Lennox Service Process – Step by Step
- 1
Diagnosis. We check Lennox-specific diagnostic codes first. On communicating systems that’s the iComfort S30 interface. On older units we work from the LED flash codes on the control board. We test the actual failure, not just the code. Codes point us in a direction; our meters confirm what actually failed.
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Written price. Before any repair or installation begins, you get a written price. That’s our non-negotiable standard on every Lennox job in Yonkers. No exceptions, no door-step surprises.
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Repair or install. We use Lennox OEM parts for critical components. For installations, we properly size the system to your home’s heating and cooling load, not to whatever the old unit was. Yonkers four-season climate means your Lennox system has to handle 20s in winter and upper 80s in summer.
- 4
Testing. After any repair or install, we run the system through a full cycle. On variable-capacity units, we verify modulation across the full range. On furnaces, we check proper gas pressure, temperature rise, and flue draft. We also check static pressure to make sure the ductwork isn’t strangling the unit.
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Written guarantee. Every repair comes with a written guarantee, and it’s included automatically, not added on. If the same issue comes back, the second visit is free. That’s the 365-Day Done Right Promise, and it’s in writing on every job.
Lennox Products We Service & Install in Yonkers
We service and install the full Lennox range, including the Elite Series (XC20 and XP20 variable-capacity AC and heat pumps), Signature Series (SLP99V modulating furnaces, XC25 AC units), Merit Series (ML196E furnaces, 13ACX condensers), and the Dave Lennox Signature Collection, including the SLO185V oil furnace common in Yonkers pre-1970 homes. We also handle Lennox mini-split installations, which have become a go-to in Yonkers apartments and older single-family homes where running ductwork through plaster walls and limited mechanical space is a non-starter. We keep common Lennox filters in stock locally, and we handle air filtration upgrades for homeowners dealing with Yonkers seasonal allergens and older duct systems. Our techs are fully trained on Lennox heat exchangers and the specific replacement procedures they require, including warranty-safe practices that keep your Lennox coverage intact.
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While we have deep Lennox expertise across Yonkers, we’re not single-brand dependent. We service and install Carrier and Trane systems daily, and our techs are certified across all major brands. That means when we recommend a Lennox part or a Lennox repair, it’s because we genuinely think it’s the right call for your system, not because it’s the only brand we know.
Lennox HVAC Pricing in Yonkers
| Service | Typical Yonkers Price Range |
|---|---|
| Lennox AC Repair | $150 – $650 |
| Lennox Furnace Repair | $150 – $700 |
| Lennox AC Installation | $3,500 – $7,500 |
| Lennox Furnace Tune-Up | $80 – $200 |
These are the ranges we quote in Yonkers for Lennox work. Most repairs land in the $150 to $500 zone depending on the part. Installations vary by system size, efficiency tier, and whether you’re doing a straight swap or a full conversion like a window-unit-to-central-air retrofit in a prewar Park Hill apartment. Every quote comes in writing before any work starts. Call (838) 213-7827 for an exact number.

FAQs – Lennox HVAC Service in Yonkers
An E180 on a Lennox XC20 typically means the iComfort S30 thermostat lost communication with the outdoor unit, and the reason it runs sometimes is that the fault is intermittent, usually a loose or corroded low-voltage connection. In Yonkers, we see this most often on hillside streets where overhead lines and river-valley moisture accelerate corrosion at splice points. The intermittent nature is the give away: a hard communication board failure usually locks the system out completely. We trace the low-voltage run, find the bad splice or corroded terminal, and repair it permanently. Call (838) 213-7827 and we’ll get eyes on it fast.
Yes, the secondary heat exchanger on a Lennox G26 can be replaced as a standalone component, and we do these repairs in Yonkers regularly. The honest caveat: on a G26 that’s 25-plus years old, the labor to pull and replace a secondary heat exchanger often lands close to the cost of installing a new Merit Series ML196E. We’ll price both options in writing and let you decide. No pressure either way. Call (838) 213-7827 for a written quote.
Yonkers water has higher mineral content than many areas, and that matters for 90%+ Lennox furnaces because they produce condensate constantly. Minerals build up in the condensate trap and drain lines faster here than in softer-water areas, which leads to clogs, backed-up condensate, and eventually secondary heat exchanger corrosion. The fix is annual maintenance, which includes cleaning the trap and flushing the drain lines. A tune-up in Yonkers runs $80 to $200, and it’s the cheapest insurance you’ll buy against a $900 heat exchanger failure. Call (838) 213-7827 to book yours.
It depends on the age of the furnace. A genuine Lennox modulating gas valve for an SLP99V is one of the pricier components, and with labor, the repair typically lands in the upper end of our $150 to $700 furnace repair range. If your SLP99V is under 10 years old, repairing it makes sense because you’re preserving a high-efficiency modulating system without spending $4,500-plus on replacement. If it’s 15 years or older and you’re looking at other looming failures, a new furnace may be the smarter long-term money. We’ll give you the straight math on both options and a written price either way. Call (838) 213-7827.
A brief gas smell on the first startup of the heating season is usually residual gas from the burner area that dissipates within seconds. But if the smell persists more than a minute or two, shut the system down and call us. Persistent gas odor on an ML196E points to a real problem: a failing gas valve, a cracked manifold, or in worst cases a compromised heat exchanger. This is not something to troubleshoot on your own. Call (838) 213-7827 any time, day or night, and a real person will answer.
No, we’re an independent Lennox service provider in Yonkers, not a factory-authorized dealer. That independence means we’re not tied to Lennox quotas or sales targets. We recommend what your system actually needs, whether that’s a $150 capacitor replacement or a full installation. We use genuine Lennox OEM parts for critical components and we follow Lennox service procedures, but we answer to you, not to a manufacturer.
Book Your Lennox Service in Yonkers, NY
Whether your Lennox system is showing an error code, making a sound it shouldn’t, or just ready for its annual tune-up, we’ll give you a written price before any work starts and a live arrival time you can track to your door. Call (838) 213-7827 now for a free estimate on Lennox service in Yonkers.
Written by Andre Fuller, Owner at Halden Heating and Air Yonkers, serving Yonkers since 2004.