For the past five years, I've been using a Southern
Burner vented heater in my greenhouse, but while I
have a new greenhouse under construction, I'm thinking
about upgrading to something a bit more efficient.
I'm considering a direct vent heater, either Empire
DV35 or Sterling SF30 with ~24,500 BTU output, as that
would allow me to seal up the greenhouse better. The
Empire has a standing pilot light, passive exhaust,
and sits on the ground. The Sterling has electric
ignition, hangs from the ceiling, and has power
exhaust. Does anyone have experience with either of
these brands in a wet greenhouse?
I'd prefer to have the heater at ground level and am
wondering if the Sterling can sit on concrete blocks
instead of hanging. I'm a little concerned about the
pilot light on the Empire, as the pilot on my Southern
Burner went out a few times. Does the Empire remain
lit reliably? Electronic ignition and power exhaust
of the Sterling isn't a worry, as I plan to have a
backup generator installed for power cuts, but I don't
know if it would have a significant effect on
efficiency.
Any comments or other recommendations?
Thanks.
Nick
--
Nicholas Plummer
Durham, NC, USA
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