b'KEY LESSONS A survey of Toronto-area heat pump owners showed a high level of satisfaction How well do theyperform once installed?Cold-climate ASHPs are definitely able to meet a homes heating needs in our climate if sized appropriately; this even applies to 100-year-old homes, and weve documented many examples. Homeowners have also noted that some of the best systems are much quieter indoors than the furnaces they replace, and they are especially good at reducing temperature swings and maintaining thermal comfort (due to theirvariable capacity). In terms of their energy perfor-mance, weve connected with many homeowners that have installed centrally ducted ASHPs and have done utility bill analysis on several homes. Weve looked at how much natural gas consumption decreased and how much electricityconsumption increased, and this allowsNRCans Toolkit considers the temperature dependence of the ASHP us to estimate the heat pump efficiencycapacity and home heating load. This is key for sizing, and it is a different (i.e., the COP). The as-installed approach when compared to conventional equipment sized to a single-efficiencies in these homes were temperature design heat lossgenerally near expectations from theLa trousse doutils de RNCan tient compte de la dpendancelgard standardized ratings.de la temprature, de la capacit de la thermopompe et de la charge de chauffage. Cest une approche diffrente par rapportlquipement Whats the financial case? conventionnel dimensionn en fonction dune perte de chaleur nominale A full financial evaluation should temprature uniqueconsider the added cost over a conven-tional system against the lifetime savings. Savings is straightforward tocarbon pricing, but at best, we can onlycomment la consommation de gaz calculate. It depends on the ASHP COPevaluate potential scenarios for naturel a diminu et comment celle and the utility rates, but for hybridlifetime savings.dlectricit a augment, ce qui nous systems, it is slightly more complicated.permet destimer le coefficient deWhile we can have some confidenceUsing current natural gas and in the COP, we cant know the utilityelectricity rates (55.8 cents/m3 and 11.4performance (CdP). Les efficacitsrates over the full system lifetime. It iscents/kWh) for Toronto, and assumingdans ces maisons taient 1 possible to assume current utility ratesan average ASHP COP of 2.7, the totalgnralement proches des attentes desvaluations standardises.and consider planned increases likebill savings is 25 per cent. For a homeQuel est largument financier ?Le calcul des conomies dpend du CdP de la pompechaleur et des * RED TAGS CLEARANCEtarifs des services publics, mais pour les systmes hybrides, cest lgrement * GAS APPLIANCE HOOK-UP plus compliqu. Nous ne pouvons pas connatre les tarifs des services publics * GAS FURNACES* BOILERS sur la dure de vie totale du systme. Il est possible de supposer les tarifs actuels * COMBI* IN-FLOOR HEATING des services publics et de tenir compte BUILDING* CENTRAL & DUCTLESS AIR des augmentations prvues, comme la tarification du carbone, mais au mieux, nous ne pouvons valuer que des RELATIONSHIPS CONDITIONING SYSTEMS scnarios potentiels.En utilisant les tarifs du gaz naturel FOR TOMORROW. * WINE COOLERS et de llectricit (55,8 cents/m 3 et 11,4 cents/kWh) pour Toronto, et en * POOL HEATERS* HRV supposant un CdP moyen de la PCAA de 2,7, les conomies totales sur la Commercial/Industrial/Residential * DUCTWORK AND VENTING facture sont de 25 %. Pour une maison consommant 2 000 m 3 par an pour le chauffage, cela reprsente une rduction annuelle de 274 $. La tarification du (416) 291-1655-(416) 688-6396-appleheating.ca-appleheating1655@gmail.com carbone devrait ajouter 22,6 cents/m 3 au cot du gaz dici 2030, de sorte que les 28 InsightSpring 2023'