While I was on my trip to the Midwest, Mark from Penn Wynne plumbing–who came out to the house last week–emailed his estimate to rough the entire house in with old and new construction. John called Mark today to set up a time for him to come over and do a plumbing plan for the existing house. The architectural plans include the plumbing plan for the new construction.
So we’re now set on plumbing, electrical and masonry.
We’re now working on the HVAC and HVAC plan. We’ll have a forced air unit, duct work has to be installed and we’re looking at all heating and cooling units that are the most efficient. To get the most efficient unit, we have to use direct vent. We have a chimney but for efficiency we don’t want to put the exhaust in the chimney because it’s nowhere near as efficient as a direct vent system. We’re looking at Lennox, Trane, Carrier, American Standard, Goodman and Bryant.
The HVAC for the new construction will be relatively easy to run the duct work but getting the duct work into the existing house will be challenging and may necessitate putting independent zones in–one for the new construction (in the basement) and a second unit in the attic that can feed the existing three bedrooms and bathrooms upstairs.
Air conditioners manufactured after January 26, 2006 must achieve a SEER (seasonal energy efficiency ratio) of 13 or higher. Older units were approximately 6 or less and vented through chimneys. The previous minimum SEER was 10.