OK, so we have a basement ranch one system heats and cools the entire house. The basement is being made into a mother-in-law suite. The back porch has been turned into a sun room, it has 6" stud walls with insulation and is comprised mostly of 5x5 windows a glass french door and a glass standard door.
Need to give "auxiliary" control the the main room and heat and cool the sunroom. the basement is ~800 sqft and the sunroom 300 sqft.
I am getting fairly consistent recommendations the 800 sqft between 18000 and 24000 BTU but HVAC contractors ar all over the place on the sunroom from a low of 9000 BTU to a high of 24000BTU.... All claim to have figged the heat load and so forth... one wants to put a 3.5 ton unit with 2 24000BTU indoor units, the rest are at 3 tons with the afore mentioned various sized indoor units.
This huge variance is confusing, can anyone shed any light on what is going on here?
Need to give "auxiliary" control the the main room and heat and cool the sunroom. the basement is ~800 sqft and the sunroom 300 sqft.
I am getting fairly consistent recommendations the 800 sqft between 18000 and 24000 BTU but HVAC contractors ar all over the place on the sunroom from a low of 9000 BTU to a high of 24000BTU.... All claim to have figged the heat load and so forth... one wants to put a 3.5 ton unit with 2 24000BTU indoor units, the rest are at 3 tons with the afore mentioned various sized indoor units.
This huge variance is confusing, can anyone shed any light on what is going on here?