Ef­fi­cient home heat­ing sys­tems

Central Otago Mirror - - FRONT PAGE -

Warm and Cool are spe­cial­ists in ef­fi­cient heat­ing sys­tems. Their pri­mary fo­cus is in­floor, water-fed cen­tral heat­ing sys­tems. Tra­di­tion­ally these sys­tems have used fos­sil fuel heat sources such as coal, diesel and wood pel­lets but both the unit price and the pol­lu­tion fac­tor have pushed these choices fur­ther out of favour with many po­ten­tial clients. Dur­ing the past three years Warm and Cool have moved to high ef­fi­ciency aerother­mal (airto-water) heat pumps. The in­verter tech­nol­ogy en­ables a heat pump to mod­er­ate the elec­tri­cal in­put ac­cord­ing to the en­ergy de­mand from the in­floor sys­tem and the use of night-rate elec­tric­ity tar­iffs makes this form of en­ergy very af­ford­able. Peo­ple are of­ten wor­ried about the abil­ity of heat pumps to per­form in cold con­di­tions but that is­sue is now a thing of the past. Warm and Cool’s heat pumps oper­ate ef­fec­tively down to -20 or -25C and the abil­ity to oper­ate strongly around 0C has al­lowed this tech­nol­ogy to be in­stalled in Queen­stown and Wanaka dur­ing the past two years, with great re­sults. Warm and Cool pre­fer aerother­mal heat pumps over geo­ther­mal (ground source) heat pumps as they have a much lower in­stal­la­tion cost and higher over­all ef­fi­cien­cies. Warm and Cool have re­cently com­pleted an Eco-hy­brid house on the Taieri Plains, near Mos­giel. This house com­bines so­lar en­ergy and an in­verter heat pump to pro­vide a full cen­tral heat­ing sys­tem and do­mes­tic hot water heat­ing at an in­cred­i­bly low op­er­at­ing price. Be­cause it uses cleanly gen­er­ated elec­tric­ity at high ef­fi­cien­cies and the nat­u­ral in­put of so­lar en­ergy, the emis­sions from this house are zero, which makes it kind on the environment as well. You can check out the ac­tual run­ning costs at

If you would like to visit the Eco­hy­brid house, please con­tact Warm and Cool di­rectly to see the fan­tas­tic ad­van­tages that an af­ford­able cen­tral heat­ing sys­tem can of­fer.

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