UEi C165+N Combustion Analyzer with NOx Sensor

Description

The C165+N is an HVAC control from UEi stocked by Buy Comfort Direct — full listing: UEi C165+N Combustion Analyzer with NOx Sensor. This page covers what it is, where it fits in a system, what to check before you order, and how it ships.

About the C165+N

Where the C165+N fits

Controls decide how the equipment behaves: thermostats and zoning panels call for heating and cooling, and safety devices such as float switches and condensate pumps stop water damage before it starts. The C165+N has to match the equipment it is wired to — stages, heat-pump reversing valve, common wire and voltage all matter.

Modern controls do more than switch a relay: staging, dehumidification calls, fan profiles, dual-fuel changeover and remote access all live in the thermostat or panel. Matching the control to the equipment’s capabilities unlocks features that are otherwise wasted.

Background reading: the U.S. Department of Energy maintenance guide.

What to check before you order

• Compatibility: single or multi-stage, heat pump (O/B), dual-fuel, communicating versus conventional.
• Wiring: 24 V common wire availability, or line-voltage rating where applicable.
• Placement: float switches in the primary drain pan or secondary line; pumps sized for lift.

Installation and service notes

Kill power at the breaker before wiring low-voltage controls, label every conductor, and confirm the common wire before relying on a powered thermostat. Zoning panels and dual-fuel controls need the equipment’s stage and fan settings configured to match, so keep the equipment manual next to the control manual during setup.

Why buy the C165+N from Buy Comfort Direct

We are a stocking HVAC distributor based in Winder, Georgia — not a marketplace reseller. Orders over $99 ship free, and financing is available at checkout through Affirm. If you are not sure this is the right part, call (877) 843-4822 before you order and we will match it to your equipment. Browse the rest of our Tools, and see what customers say on our reviews page.

Ordering and delivery

In-stock items ship from our Winder, Georgia warehouse. Orders over $99 ship free; large equipment travels by freight carrier and parts by ground, and you will get tracking by email when it leaves. Need it matched to a system, or need a quantity that is not on the shelf? Use the contact page or call (877) 843-4822 and we will confirm availability before you pay.

C165+N FAQ

Will this work with my system?

Send us the equipment model numbers and we will confirm before you order.

Does the C165+N ship free?

Yes on orders over $99 — most orders that include it qualify. Large equipment ships by freight carrier; parts ship by ground.

How do I know it matches my equipment?

Send us your equipment model number through our contact page or call (877) 843-4822. We check the pairing before it ships.