Line Voltage Thermostat Ratings, A Repairman Reviews The Brands... 

With our line voltage thermostat ratings you can cut through all the sales hype and find value. We have examined the manufacturers' literature and by using our HVAC service experience have provided our unique system of ratings. It truly is like taking a repairman with you while you shop! We have given you our top pick followed by a complete list of manufacturers and their ratings.

World's Best Line Voltage Thermostats:

Our top pick is from THERMOSMART which is from The Netherlands. The brand offers the latest technology and can be controlled from a smartphone with their free app. The units can be purchased directly from their website and are backed by a good guarantee. 

Other Line Voltage Thermostat Ratings

We continue our line voltage thermostat ratings with an alphabetical list of manufacturers and reviews of their products.


This brand offers basic mechanical thermostats as well as wired and wireless electronic programmable units. Their website is not much help and does not have a stated warranty policy.<1*

These units use triac control for accuracy. They are available in programmable as well as non programmable units. The TH114 series is for in-floor electric heat and has a GFCI included. The brand is made by HONEYWELL and the guarantee is not very good when compared to other brands.<1*

This brand is from MARLEY ENGINEERED PRODUCTS and offers a variety of models using basic technology. Their website does not have a stated warranty policy and the thermostats are only sold by authorized dealers.<1*

The 86W is a basic snap action control that uses a bimetal sensing element. It is not as accurate as digital technology and the warranty is not very good.*

This brand offers both bi-metal and electronic models that can be purchased through many online outlets. They have both non-programmable and programmable units. The units are made by HONEYWELL and are backed by a decent guarantee.*

The M6001 thermostat features accurate triac control and an LCD screen. They are programmable and are backed by a good warranty but it is not as good as some of the other brands. The units are made in China and are imported to North America by CANARM which is based in Canada. 

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