Look at a Modine Hot Dawg heater. Modine makes greenhouse heaters but this one is designed for use in a garage where there is a concern for noxious gases. Just after I bought mine they came out with a version for humid environments (sigh). They use glow plug ignition with failover safety and power venting. It worked like a charm all last winter.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Nicholas Plummer Sent: Sunday, August 19, 2007 1:30 PM To: [email protected] Subject: [OGD] direct vent gas heaters 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 ____________________________________________________________________________ ________ Looking for a deal? Find great prices on flights and hotels with Yahoo! FareChase. http://farechase.yahoo.com/ _______________________________________________ the OrchidGuide Digest (OGD) [email protected] http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com _______________________________________________ the OrchidGuide Digest (OGD) [email protected] http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
