Used MUNNS and bought very high end Carrier unit. If you can afford it, recommend a 19 SEER rated unit because the payback is a little over 5 years due to the lower electric bills. High end units have significantly more complex electronics and can thus cost more to repair. We required 12 year parts and labor warranty to mitigate higher repair costs. Our electric bills are under $100/month. Approx. $14K for entire removal and installation of new system.
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