Did not install it... at this point I do not plan to, since the
oil heats up pretty quickly to 180, then right up to 210 in less than 5 minutes of run time, this in cold (30-50 F) weather.
If I was in a colder clime I would add one. A better, easier solution to a quicker warmup would be to have a manual fan switch or automatic fan thermostat, so the WATER heats up more quickly.
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