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Honeywell T4039B1008/U

T4039 Thermostat

MPN: T4039B1008/U
Category: Honeywell Building Management Systems (BMS)

Price and lead time confirmed within 1 business day

Discontinued by Honeywell — we can still source the original T4039B1008/U (new, used or refurbished, subject to availability). Request a quote below.

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12-month warranty (new) · 3-month (used/refurbished)
30-day returns, no restocking fee on unused parts
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What is the Honeywell T4039B1008/U?

T4039 thermostats control the line voltage valves of fan coil units in cooling, manual changeover heating-cooling, or automatic changeover heating-cooling systems. One or two valves may be controlled directly by the thermostat. The fan switch (where applicable) controls air circulation. Features & Benefits:

Manual fan control available

Positive dead spot separates heating-cooling circuits in automatic models

Scale range is approximately 55 to 95 °F (13 to 35 °C) in 10 °F (6 °C) increments from 75 °F (24 °C) midpoint

Cooling circuit breaks in "FAN-OFF" position to reduce condensation problems in the fan coil unit

Color-coded lead wires

All models can be mounted on standard vertical outlet boxes. Models with manual switching can be mounted on 4-inch square junction boxes or 2-gang outlet boxes

Adjustable range stops limit temperature adjustment or lock at selected setpoint

Models available with separate power source for fan and thermostat

Honeywell T4039B1008/U — T4039 thermostats control the line-voltage valves of fan coil units in cooling, manual changeover heating-cooling, or automatic changeover heating-cooling systems. Discontinued by Honeywell — no longer in the current range. PartnerPLC sources new, surplus and discontinued Honeywell parts — request a quote for price, condition and lead time.

Specifications

Product

Lifecycle

Discontinued by Honeywell

Ordering codes

Part numbers on this product page

T4039B1008/U, T4039J1026/U, T4039M1004/U, T4039S1016/U, T4039S1040/U

T4039B1008/U: frequently asked questions

Can I still buy the T4039B1008/U now that it is discontinued?

Yes. Honeywell has discontinued the T4039B1008/U, but sourcing discontinued parts is what PartnerPLC specialises in — new old stock, used and refurbished units. Request a quote and we'll confirm availability, condition and lead time.

When can T4039B1008/U be shipped?

T4039B1008/U is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up T4039B1008/U in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for T4039B1008/U and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for T4039B1008/U, subject to availability and destination.