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ProStat+ PSP4273 Programmable Thermostat – 4 Heat / 2 Cool, Humidity Control, Heat Pump & Dual Fuel Compatible

ProStat+ PSP4273 Programmable Thermostat – 4 Heat / 2 Cool, Humidity Control, Heat Pump & Dual Fuel Compatible

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Regular price $152.81 USD
Regular price Sale price $152.81 USD
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ProStat+ PSP4273 programmable thermostat with 4 heat/2 cool control, humidity management, heat pump and dual-fuel compatibility, and optional WiFi.

  • Advanced thermostat supporting up to 4 heat and 2 cool stages

  • Built-in humidity, dehumidification and reheat control capabilities

  • Compatible with conventional, heat pump and dual-fuel HVAC systems

  • 7-day, 5+1+1-day, 1-day or non-programmable operation

  • Optional WiFi, remote sensors, geofencing and fresh-air ventilation control

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Specifications

Specification

Details

Brand

ProStat+

Part Number / MPN

PSP2111

Product Type

Programmable HVAC Thermostat

Heating Stages

Up to 2 Heat

Cooling Stages

1 Cool

Programming

7-Day / 5+1+1-Day / 1-Day

Periods Per Day

Up to 4

Electrical Rating

20–28 VAC, 5 VA Max

Control Range

35°F–99°F

Heat Pump Compatible

Yes

Auto Changeover

Yes

WiFi

Optional Module Required

WiFi Frequency

2.4 GHz with Optional Module

Outdoor Sensor Ready

Yes

Dry Contact Input

Yes

Keypad Lock

Yes

Languages

English, Spanish, French

Application

Residential HVAC Control

 

description

ProStat+ PSP4273 Programmable Thermostat – 4 Heat / 2 Cool, Humidity Control, Heat Pump & Dual Fuel Compatible

The ProStat+ PSP4273 is a premium programmable HVAC thermostat designed for advanced residential heating and cooling systems. It supports up to 4 stages of heating and 2 stages of cooling and can control compatible conventional gas/electric, heat pump, and dual-fuel systems.

A major feature of the PSP4273 is its integrated indoor air quality and humidity control capability. It can control humidification, dehumidification, reheat, and fresh-air ventilation on properly configured HVAC systems. Flexible programming includes 7-day, 5+1+1-day, 1-day, or non-programmable operation, with up to four scheduled periods per day.

Key Features & Function

  • ProStat+

  • Part Number: PSP4273

  • Premium programmable HVAC thermostat

  • Up to 4 Heat / 2 Cool

  • Humidity control

  • Humidification control

  • Dehumidification control

  • Reheat capability

  • Fresh-air ventilation control

  • Programmable auxiliary output

  • Conventional gas/electric compatible

  • Heat pump compatible

  • Dual-fuel compatible

  • Auto changeover

  • 7-day programming

  • 5+1+1-day programming

  • 1-day programming

  • Non-programmable option

  • Up to 4 programmable periods per day

  • Adjustable staging deadbands

  • Adjustable staging timers

  • Vacation mode

  • Smart recovery

  • Setpoint limiting

  • Equipment runtime tracking

  • Condensate overflow warning capability

  • Remote temperature sensor capability

  • Optional WiFi connectivity

  • Optional geofencing with compatible WiFi module

Product Details & Specifications

Specification Details
Brand ProStat+
Part Number / MPN PSP4273
Product Type Programmable HVAC Thermostat
Maximum Heating Stages Up to 4 Heat
Maximum Cooling Stages Up to 2 Cool
Programming 7-Day / 5+1+1-Day / 1-Day / Non-Programmable
Periods Per Day Up to 4
Heat Pump Compatible Yes
Dual-Fuel Compatible Yes
Gas/Electric Compatible Yes
Auto Changeover Yes
Humidity Control Yes
Humidification Yes
Dehumidification Yes
Reheat Control Yes
Fresh-Air Ventilation Yes
Remote Sensor Capability Yes
WiFi Optional Module
Geofencing Available with Optional WiFi Module
Application Residential HVAC Control

The PSP4273 is specifically identified by ProStat+ as the 4 Heat / 2 Cool model with humidity control.

🛠️ HVAC Depot Pro Tip

The PSP4273 is different from the PSP4272 primarily because the PSP4273 adds advanced humidity and indoor-air-quality control capabilities.

This thermostat is particularly useful when the HVAC system requires control of:

  • Humidification

  • Dehumidification

  • Reheat

  • Fresh-air ventilation

  • Multi-stage heating

  • Two-stage cooling

  • Heat pump auxiliary heat

  • Dual-fuel operation

Also note that the standard PSP4273 uses optional WiFi connectivity through a compatible plug-in module. Do not advertise the standard PSP4273 as having built-in WiFi unless the required WiFi module is included.

Equipment / Model Compatibility

The ProStat+ PSP4273 is designed for compatible residential HVAC systems including:

  • Goodman HVAC systems

  • Amana HVAC systems

  • Residential air conditioners

  • Gas furnaces

  • Electric heating systems

  • Heat pump systems

  • Dual-fuel systems

  • Multi-stage HVAC systems

  • Two-stage cooling systems

  • Systems requiring humidity control

  • Systems requiring dehumidification control

  • Fresh-air ventilation applications

The thermostat supports configurations of up to 4 Heat / 2 Cool. Exact compatibility should be determined from the HVAC system's equipment type, staging, wiring, auxiliary heat configuration, and indoor-air-quality accessories. 

Specification

Refund policy

Refund & Return Policy

Last Updated: June 2026

At HVAC Parts & Equipment Depot, customer satisfaction is important to us. This Refund & Return Policy explains how returns, exchanges, and refunds are handled for purchases made through TopHVACParts.com.

Return Eligibility

We accept returns within 30 days of delivery.

To qualify for a return:

  • The item must be unused, uninstalled, and in its original condition.
  • The item must be returned in its original packaging.
  • Model numbers and serial numbers must match the original purchase records.
  • Proof of purchase or order confirmation is required.

Non-Returnable Items

The following items are not eligible for return or refund:

  • Installed or used parts.
  • Products showing signs of installation, modification, or damage caused after delivery.
  • Items missing original packaging.
  • Sale or clearance items.
  • Special-order or custom-order products.
  • Returns requested more than 30 days after delivery.

Restocking Fee

Approved returns may be subject to a 20% restocking fee.

The restocking fee will be deducted from the refund amount after the returned item has been inspected and approved.

Damaged, Defective, or Incorrect Items

If you receive a damaged, defective, or incorrect item, please contact us within 7 days of delivery.

Email: support@tophvacparts.com
Phone: (214) 734-5222

We may request photographs and additional information to help process your claim.

If the claim is approved, we will provide a replacement, exchange, or refund at no additional cost to you.

Exchanges

We replace items only if they are defective, damaged upon arrival, or incorrectly shipped.

To request an exchange, contact us at:

support@tophvacparts.com

Refund Process

Once your return is received and inspected, we will notify you by email regarding approval or rejection of your refund request.

If approved:

  • Refunds will be issued to the original payment method.
  • Processing typically takes 7–14 business days after approval.
  • Your financial institution may require additional time before the refund appears in your account.

Return Shipping

Customers are responsible for return shipping costs unless the return is the result of:

  • Our shipping error,
  • A defective product,
  • A damaged product received upon delivery.

Original shipping charges are non-refundable.

We recommend using a trackable shipping service and purchasing shipping insurance for higher-value items.

Return Address

HVAC Parts & Equipment Depot
1135 E Plano Parkway, Suite 8
Plano, TX 75074
United States

Professional Installation Notice

Many HVAC products require installation by a licensed HVAC professional.

HVAC Parts & Equipment Depot is not responsible for damages resulting from improper installation, misuse, unauthorized modifications, or failure to follow manufacturer instructions.

Special Orders

Special-order products must be picked up within 30 days of purchase unless other arrangements have been approved.

Unclaimed special-order products may be returned to the manufacturer and may be subject to applicable restocking fees.

Contact Us

If you have questions regarding returns, refunds, or exchanges, please contact us:

HVAC Parts & Equipment Depot

Phone: (214) 734-5222
Email: support@tophvacparts.com

Michel & Siso are very knowledgeable and explain everything to where I could understand! Amazing experience! Thank you will always come here for any AC needs. Trustworthy and excellent customer service.

Celest G.
Verified Customer
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