Emergency heating and operation costs for heating

Emergency Heating

Even the best heating facilities sometimes go wrong, and an alarm system has little value unless you have on hand some emergency heating equipment, ready for use. My emergency setup consists of two portable electric heaters. I set them on boxes, one at each end of the greenhouse, and place an electric fan behind each of them. Although not recommended for daily use, this setup serves the purpose and keeps plants from freezing or chilling and so suffering a setback in growth.

A still simpler from of emergency heating can be provided with a candle inside a flower pot. Light the candle, then invert a similar sized pot over the first one-pot rims together. The candle will receive oxygen through the hole in the top pot. Place several of these heaters around the greenhouse and you will maintain an above-freezing temperature. The number of these units you’ll need will depend on the snugness as well as the size of your greenhouse.

Operation costs

In many sections of the country heat is the most expensive item in greenhouse operation; in other areas it is negligible. Any manufacturer who specializes in greenhouse building will give you accurate estimates of heating costs for your location and greenhouse during an average season.

Or a local plumber may advise you. A friend in Michigan who uses a forced-air circulating heater for her seven-section redwood house finds the cost about $35.00 per season to maintain 50-degree temperatures at night and 60 during the day. A Minnesota grower, employing hot water for the same sized house, keeps it at 65 at night, 75 in the day, at an estimated cost of $105.00 per season.

Tags: home greenhouse

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