Lennox has built heating equipment since 1895, when it started in Iowa, and it sells to contractors through its own company-owned distribution rather than through independent wholesalers. For a Lennox owner in Tiburon, Belvedere or Mill Valley that matters in one practical way: some repairs depend on Lennox-specific parts. We are an independent service company, not affiliated with Lennox, and we repair and maintain Signature Collection, Elite and Merit equipment.
Signature Collection, Elite and Merit
Signature Collection is the top of the range: variable-capacity air conditioners and heat pumps, modulating furnaces and communicating controls built around iComfort. Elite Series covers the middle with multi-stage equipment. Merit Series is the entry line, single-stage and simple.
A Merit air conditioner and a Signature heat pump are very different repairs. One is usually a meter, a capacitor and a contactor. The other starts with the control’s alert history, then moves to sensors, the inverter drive and the communication wiring.
Standard parts and Lennox-only parts
| Part | Where it usually comes from |
|---|---|
| Capacitors, contactors, fuses, filters | Standard HVAC parts, widely available |
| Igniters, flame sensors, pressure switches | Often available as standard or universal replacements |
| Control boards on newer furnaces and air handlers | Often Lennox-specific, ordered by model number |
| Variable-capacity drives and sensors | Lennox-specific, ordered for your model |
| iComfort thermostats and their modules | Lennox-specific |
We diagnose first, tell you which group the failed part falls into and whether it has to be ordered, then quote the repair. If a part must be ordered, we leave the system safe and running as well as it can in the meantime.
iComfort controls
On Signature equipment the iComfort thermostat is part of the system, not an accessory. It manages the staging, shows alerts and can send them to your phone. Replacing it with a generic smart thermostat usually loses the variable-capacity operation, so we repair or replace like for like. When an iComfort screen shows a communication alert, we check the wiring and connections at the furnace or air handler and at the outdoor unit before blaming a board.
Problems we see on Lennox systems here
- Corrosion on waterfront lots. Salt air on the Tiburon peninsula and in Belvedere eats at coil fins, fasteners and electrical terminals. A yearly cleaning and connection check slows it down.
- High-limit trips on furnaces. Clogged filters and closed registers in large, zoned homes starve the furnace of air until it shuts itself off.
- Condensate problems on high-efficiency furnaces in Mill Valley crawlspaces and basements, where a blocked trap or line shuts the furnace down.
- Heat pumps that stay frosted on cold, damp mornings because of a defrost sensor or control fault.
- Noise complaints from close neighbours: a worn fan motor or loose panel on an outdoor unit that used to be quiet.
Keeping a Lennox in good shape
A yearly HVAC maintenance visit covers coil cleaning, electrical checks, condensate lines, burner and flame checks on the furnace, and a look through the iComfort alert history. Repairs are handled under furnace repair, AC repair or heat pump repair, each with a 90-day warranty on our work, and parts carry the manufacturer’s warranty.
Lennox by town: Tiburon, Belvedere, Mill Valley.