Replace Existing Hvac or Add to it

[Wendy S.]

Good day All

So I bought an investment property, at the time inspector said there was no heat and air. My HVAC person then tested it and said the furnace was good but no air, he would need to turn the gas on to verify. Turned out he was right and was a $60 fix.

He also came up with a solution for air and heat for the entire house. The existing furnace is too big for the house (4 tonne for 1600 sqft) but he suggested tapping into what I already have and add more vents etc so I can get heat and air to the converted garage (400 sqft).

The house would have 1 system supplying heat and air for about 2,000 sqft and cost about $4,500 total fix.

However, I'm concerned about the temperature throughout the house especially as I rent per bedroom and the garage conversion (bought it like this) could be 2 bedrooms or a 1 bedroom flat with smaller room for office, small kitchen and living area.

The other solution by another company is to replace oversized unit and install a 3 tonne unit supplying heat and air then install mini splits for the garage conversion. This would be more efficient, occupants have better temperature control but costs $12,850.

Of course I'm grappling with what to do as that is $8,350 difference plus I have to insulate attic and walls...

Not to mention I've been carrying this property for 10 months and is now so close to the finish line to get tenants in.

Will my experienced Bpers weigh in thanks.