I am reviewing 2 contractor bids for installing a ducted Mitsubishi heat pump systems for our home and trying to understand the differences between 2 completely different sets of equipment that have been specced out by each contractor.
Our home is roughly 4000 sqft and both contractors have divided the house into 2 separate system areas, each with it's own outdoor unit and corresponding indoor unit/s. One contractor has quoted us on a system using the Mitsubishi P-series equipment (PUZ-HA42NKA & PUZ-HA36NHA4 with PVA Air Handlers) while the other is planning to use the MXZ Hyper Heat Outdoor Units (MXZ-8C48NAHZ and MXZ-3C24NAHZ) coupled with 5 indoor units in the SEZ series.
My basic understanding is that the M-series is for residential application and the P-series for commercial or larger residential applications. Given that our home is 4,000 sqft with a combined load of 81,000 BTUs for both sides of the house (numbers from engineer calcs) using the P-series seems like it makes sense, but if the M-series is sized accurately is there an advantage to one system over the other?
Originally we were looking at putting in ductless units, but both contractors agree that ducting the system through our crawl space would cut installation costs significantly and require us to get less individual units for each room. Do we lose significant efficiency in terms of operating costs if the system is ducted rather than ductless? Both contractors are including the cost of installing all necessary duct work under the home and plan on using some of the homes existing vents from the abandoned oil furnace system.
The quotes are not too far off from one another (and both are much higher than anticipated), but we've been told these systems will be incredibly efficient to run and give us relatively low utility bills. Given that we also need a heating and cooling solution for our home, we like that these units get both jobs done and save us from having us to install two separate traditional heating and cooling systems. The M-series quote comes in a bit higher, but also from a more experienced and Mitsubishi certified contractor.
Any advice or information on the advantages of the P-series over the M-series equipment or vice versa? Our home is located in a high desert climate, with hot dry summers where cooling is nice, but our bigger priority is efficient heating, since we have much more cold than hot throughout the year. Average coldest temp for the year is 5 degrees F.
Any help or insight is greatly appreciated! Thank you!
Our home is roughly 4000 sqft and both contractors have divided the house into 2 separate system areas, each with it's own outdoor unit and corresponding indoor unit/s. One contractor has quoted us on a system using the Mitsubishi P-series equipment (PUZ-HA42NKA & PUZ-HA36NHA4 with PVA Air Handlers) while the other is planning to use the MXZ Hyper Heat Outdoor Units (MXZ-8C48NAHZ and MXZ-3C24NAHZ) coupled with 5 indoor units in the SEZ series.
My basic understanding is that the M-series is for residential application and the P-series for commercial or larger residential applications. Given that our home is 4,000 sqft with a combined load of 81,000 BTUs for both sides of the house (numbers from engineer calcs) using the P-series seems like it makes sense, but if the M-series is sized accurately is there an advantage to one system over the other?
Originally we were looking at putting in ductless units, but both contractors agree that ducting the system through our crawl space would cut installation costs significantly and require us to get less individual units for each room. Do we lose significant efficiency in terms of operating costs if the system is ducted rather than ductless? Both contractors are including the cost of installing all necessary duct work under the home and plan on using some of the homes existing vents from the abandoned oil furnace system.
The quotes are not too far off from one another (and both are much higher than anticipated), but we've been told these systems will be incredibly efficient to run and give us relatively low utility bills. Given that we also need a heating and cooling solution for our home, we like that these units get both jobs done and save us from having us to install two separate traditional heating and cooling systems. The M-series quote comes in a bit higher, but also from a more experienced and Mitsubishi certified contractor.
Any advice or information on the advantages of the P-series over the M-series equipment or vice versa? Our home is located in a high desert climate, with hot dry summers where cooling is nice, but our bigger priority is efficient heating, since we have much more cold than hot throughout the year. Average coldest temp for the year is 5 degrees F.
Any help or insight is greatly appreciated! Thank you!
