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Message: [QUOTE="bfs3, post: 4814635, member: 10189"] lol they aren’t scare tactics. It’s simply telling someone they shouldn’t get rid of a secondary heat source. Your application sounds excellent and it it sounds like a lot of time and money was invested. Single stage heat pumps are still the most commonly installed units though and you still need a secondary heat source when buying them. A HVAC contractor wouldn’t get a permit if he was planning to heat a house with just a split heat pump system and no secondary heat source. That doesn’t mean it’s not a great idea to have one if you’re heating with Oil, Propane, Electric or having solar panels installed. In fact a contractor would be doing their client a disservice by not recommending them. I’m far from a traditional HVAC guy though. I began my career in the Energy Efficiency Industry and transitioned into HVAC design and sales as the pay is much higher. Heat Pumps haven’t changed drastically in 3 years though. They’ve gone from 25 SEER to 28/30 for top of the line models but they still work the same way. Communicating inverter systems have been around for over a decade. Just not all HVAC companies are familiar with them. The danger in advising someone else is they may take the advice you gave from having a two stage or inverter heat pump and compare it to a single stage 14 SEER that’s in their budget. 80% of all ACs and Heat Pumps sold last summer in CT were all the minimum efficiency allowed by law. They have very different capabilities and achieve different results depending on your home and set up. [/QUOTE]

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