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randen · 11-08-11, 05:59 PM

A/C Hacker

The meter was a pretty good one and I would trust its close. The only down side I see is in my testing. The one 20 gal pail is loosing heat while the other is going up. As the one pails temp drops from say 17 Deg C to 2 Deg C The effiency also drops. If the GSHP has a steady supply of of constant loop water temp, wow. As far as the shop, the office area (600 sq ft) already has infloor heat and the shop area may get it next (next summer). For now I have the air handler. I hope it can keep up.
The two Grundfos circ. pumps are rated at 85 watts ea and the air handler is 5.6 A 120 V however it will be used at its lowest speed maybe 3 amp (360W) I'm not sure if the comercial GSHP include the circ. pumps usage in their calculations. If the system runs 24/7 the cost of electricity will be a joke compared to the cost of furnace oil.

So far the buget is: excavating $1900.00 HDPE tubing $750.00 tube welding $200.00 circ pumps (Ebay) with shipping $160.00 Components for heat-pump $300.00 Componets for installation approx $300.00 Total $3610.00 Projected cost of furnace oil for the winter 2.5 tanks @ about $1000.00 per fill $2500.00 maybe $3000.00 if its really cold.

Based on the preliminary figures GSHP operation 1.2 Kw/h x 24 hrs x 30 days. $130.00 for the cost of electricity if it runs 24/7 per month NOT BAD.!!

Randen

I'm glad to see my hording has paid off.

11-08-11, 05:59 PM	#978
randen Uber EcoRenovator Join Date: Apr 2011 Location: Strathroy Ontario Canada Posts: 658 Thanks: 9 Thanked 193 Times in 131 Posts	A/C Hacker The meter was a pretty good one and I would trust its close. The only down side I see is in my testing. The one 20 gal pail is loosing heat while the other is going up. As the one pails temp drops from say 17 Deg C to 2 Deg C The effiency also drops. If the GSHP has a steady supply of of constant loop water temp, wow. As far as the shop, the office area (600 sq ft) already has infloor heat and the shop area may get it next (next summer). For now I have the air handler. I hope it can keep up. The two Grundfos circ. pumps are rated at 85 watts ea and the air handler is 5.6 A 120 V however it will be used at its lowest speed maybe 3 amp (360W) I'm not sure if the comercial GSHP include the circ. pumps usage in their calculations. If the system runs 24/7 the cost of electricity will be a joke compared to the cost of furnace oil. So far the buget is: excavating $1900.00 HDPE tubing $750.00 tube welding $200.00 circ pumps (Ebay) with shipping $160.00 Components for heat-pump $300.00 Componets for installation approx $300.00 Total $3610.00 Projected cost of furnace oil for the winter 2.5 tanks @ about $1000.00 per fill $2500.00 maybe $3000.00 if its really cold. Based on the preliminary figures GSHP operation 1.2 Kw/h x 24 hrs x 30 days. $130.00 for the cost of electricity if it runs 24/7 per month NOT BAD.!! Randen I'm glad to see my hording has paid off.