Lewistown, PA

New! MRCOOL Universal 7 Day Programmable Thermostat-FREE SHIPPING!

USD $110.00

Currently out of production, waiting for improved version developement. Contact us for info.

The universal MST03 Thermostat is an easy-to-use programmable thermostat that offers customizable control over your home’s temperature and air freshness for total comfort and efficiency. .Convenient 7 day programming lets you customize your weekday and weekend schedule based on your needs.


  • Allows you to clean your air on your terms: Event-Based Air Cleaning circulates air throughout your home periodically throughout the day or for a specific period of time to provide greater comfort through cleaner air and more even temperatures.
  • Helps you save on energy costs: Set back the temperature overnight and when you’re away. According to the U.S. Environmental Protection Agency, a programmable thermostat can save you up to 30% on energy costs annually.
  • Features progressive recovery: This ensures your home is always at your desired temperature by activating the heating and cooling equipment prior to a scheduled setting.
  • A large 4.17×2.36 inch LCD Screen with a high-contrast, backlit display for easy reading.
  • Easy-to-use temperature control and the ability to override the program schedule at any time.
  • Simultaneous temperature display of room temperature, temperature setting and outdoor temperature, in Fahrenheit or Celsius.
  • Service reminders for your HVAC system, humidifier, dehumidifier and air filter protect your equipment and ensure the longevity of your investment.
  • Permanent memory maintains programming, time and date during a power outage.
  • Simple setup menu for activating optional features.
  • Quick-reference instructions on board
  • Soft-touch keys
  • 2-year warranty
  • Brochure
  • Install Instructions

Out of stock

Ready to ship in 1-2 business days from United States (US)


Shipping Policy

Orders are shipped the most economical or convenient way.
Allow up to 2 weeks for arrival.
Free shipping on large items may require shipping to a business location, ie, without liftgate. Hardware stores, etc., often provide that service at no charge.
We do not provide expedited shipping on large items, ie, heating and cooling equipment.
After order is shipped, you will be notified, and be provided with the tracking number and name of shipper. Orders may not be canceled after they ship.


Refund Policy

30 day returns* from the date of the invoice, on unused, undamaged product that was not installed and is in resalable condition only.
Refunds will be given, minus 15% restocking fee, plus return shipping charges.
Installed product may not be returned for refund.
Undamaged product which the end-user has already accepted may not be automatically returned to us. This applies to all returns damaged in shipment which are not refused at the point of delivery. In the event of a product being damaged in shipment, we require the recipient note the damage at delivery. We are not responsible for and will not be obligated to cover any damage that occurs in shipment that is not noted by the recipient at the time of delivery. Damage claims will be filed with the shipping company for any damage the recipient indicates was received during the shipping process, but there is no guarantee non-noted damage claims will be paid.
Seller is not responsible for sizing or installation errors, or return shipping. No returns without prior approval.
*Except for Air Con which is 15 days from date of invoice.

Additional information

Mounting options

Wall bracket +$40, 24x36x3 Mounting Pad + $50, 4×17 Riser set +$29, 24x36x3 Mounting Pad and 4×17 Riser set + $79, None

Refrigerant Line Cover Kit

1-12 ft Line cover kit + $75, 2-12 ft Line cover kit + $150, None

No-Vac line set length

15 ft + $235, 25 ft + $295, 35 ft + 355, 50 ft + 455, Flare to weld fitting set + $26, none

Electrical Accessories

3/4, 60 Amp disconnect switch + $14, 3/4×6 ft electrical whip and 60 Amp disconnect switch + $37, None


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