Free sizing calculator
What size mini-split do you need?
Answer a few quick questions about your home and the rooms you want to heat and cool. We'll lay out a recommended Mitsubishi Electric system, room by room. Estimates are free.
Mitsubishi Electric Diamond Elite Contractor
Voted Best Electrician in the Hudson ValleyStep 1
What are you looking to heat and cool?
Project size
What do you need it for?
We recommend Mitsubishi Electric Hyper-Heat for heating and cooling here. A Hyper-Heat FX keeps 100% of its heating capacity down to -10°F and keeps running down to -22°F.
Step 2
Tell us about the room
Not sure of the square footage? Pick small, medium, large or extra large.
Step 3
Your recommended system
Recommended layout
1 room sized for about 7,500 BTU in total.
Single-zone, 9,000 BTU
Mitsubishi Electric Hyper-Heat heat pump
- Master bedroom9k GX wall unit
Outdoor unit: a wall bracket on a concrete or block foundation, or a ground stand if it would sit against siding or a wood-framed wall.
Ask us about current rebates and promotions. Financing through Wisetack (terms from 3 to 60 months) and Synchrony (promotional financing), on approved credit. TZ Signature Plan members get access to extended financing.
Claire is our smart assistant. She can answer questions about your result and find a time for your free estimate.
This assumes insulation and windows that met code for the year your home was built. A TZ comfort specialist confirms the exact size at your free in-home estimate.
Which indoor unit is right for each room?
FX wall unit
More airflow control to evenly heat and cool living rooms, kitchens and open spaces.
GX wall unit
Compact and low-profile. Our go-to for bedrooms and smaller rooms.
Floor or low-wall unit
Sits near the floor. Good under windows or where wall space is tight.
Ceiling cassette
Sits flush in the ceiling for a clean look.
Product photos: Mitsubishi Electric.
Free estimate
Get your free in-home estimate
Send us your layout. A comfort specialist reviews it and calls to set up a free visit to confirm sizes and placement.
Current offer: $500 off a single-zone mini-split install. TZ Signature Plan members get $650 off.
Send your request from this calculator and get code MINI350: an extra $350 off any quote you approve with us.
One code per approved quote, not per unit. It can be combined with one other current promotion, like $500 off a single-zone mini-split install.
Offers combine like this: one current site promotion plus one other offer, like a calculator code. Joining the TZ Signature Plan does not add more promotions on top.
Three 18,000 BTU systems compared
How Hyper-Heat handles the cold
Every heat pump puts out less heat as it gets colder outside. A Hyper-Heat FX keeps 100% of its heating capacity down to -10°F and keeps running down to -22°F. A standard heat pump loses heat fast below freezing and shuts off in deep cold. That is why we recommend Hyper-Heat for Hudson Valley homes.
Hyper-Heat FX
Our top pick for the coldest rooms and whole-home heat
- Full heat down to
- -10°F
- Keeps running to
- -22°F
Hyper-Heat GX
Cold-climate heat in a compact unit
- Full heat down to
- 5°F
- Keeps running to
- -22°F
Standard heat pump
Not built for deep cold
- Full heat down to
- Not rated
- Keeps running to
- Shuts off at -14°F
| Outdoor temp | Hyper-Heat FX | Hyper-Heat GX | Standard heat pump |
|---|---|---|---|
| 47°F | 30,200 | 27,400 | 27,400 |
| 17°F | 28,200 | 22,400 | 18,200 |
| 5°F | 23,600 | 19,000 | 15,200 |
| -5°F | 19,800 | 16,460 | 11,720 |
| -10°F | 17,500 | 15,150 | 10,330 |
| -22°F | 9,400 | 10,700 | Shut off |
Maximum heating output in BTU per hour for 18,000 BTU single-zone systems, from Mitsubishi Electric's submittal sheets on MitsubishiPro.com. Rated output at 47°F is lower (17,000 FX, 19,000 Hyper-Heat GX, 21,600 standard). Real output depends on the home, the install and the weather. Models: Hyper-Heat FX MSZ-FX18NL / MUZ-FX18NLHZ; Hyper-Heat GX MSZ-GX18NL / MUZ-GX18NLHZ; Standard heat pump MSZ-GX18NL / MUZ-GX18NL.
Mitsubishi Electric 12 & 12 dealer
12-year parts.
12-year labor.
Labor warranty subject to terms and conditions.
Covered for 12 years, parts and labor
As a Mitsubishi Electric 12 & 12 dealer, the systems we install come with a 12-year parts warranty and a 12-year labor warranty. The labor warranty terms:
- TZ Electric maintains your system on a yearly or twice-a-year plan, so we can confirm it is cared for and running right.
- The 12-year labor warranty is honored only through TZ Electric. No other dealer can use it.
A TZ maintenance plan is what keeps your 12-year labor warranty valid. See mini-split maintenance plans.
Rebates, financing and peace of mind
Control it from your phone
Mitsubishi Electric systems are Wi-Fi ready. With the app you can adjust temperatures, set schedules and check on every room from anywhere.
Rebates
Whole-home heat pump systems may qualify for NYS Clean Heat rebates through your utility. We handle the paperwork for you.
Financing that fits
Financing through Wisetack (terms from 3 to 60 months) and Synchrony (promotional financing), on approved credit. See financing.
Want longer terms? TZ Signature Plan members get access to extended financing on new systems, if they qualify. See the TZ Signature Plan.
TZ Electric is a participating contractor in NYSERDA's residential loan program: loans from $1,500 to $25,000 with 5, 10 or 15 year terms, for those who qualify. The paperwork takes longer, so ask us if it fits your project.
Maintenance
Yearly cleaning and service keep your system efficient and keep your 12-year labor warranty valid. See our mini-split maintenance options.
Installed by certified technicians
Installed and serviced by Mitsubishi Electric Diamond-certified TZ technicians.
Outages happen here
We do both generators and mini-splits
When the power goes out in winter, a home without heat gets cold fast. Even a smaller generator can back up a mini-split, so you always have a warm room to stay in until the lights come back.
Doing a generator and a mini-split? Send a request for both at the same time and go ahead with both, and you get $500 off each quote.
Offers combine like this: one current site promotion plus one other offer, like a calculator code. Joining the TZ Signature Plan does not add more promotions on top.
Common questions
Do mini-splits work in Hudson Valley winters?
Yes. Mitsubishi Electric Hyper-Heat systems are built for cold climates. A Hyper-Heat FX keeps 100% of its heating capacity down to -10°F and keeps running down to -22°F, which is why we recommend Hyper-Heat for heating and cooling here.
What's the difference between a standard heat pump and a Hyper-Heat heat pump?
Every heat pump puts out less heat as it gets colder outside. A standard heat pump starts losing heating power quickly once it drops below freezing. A Mitsubishi Electric Hyper-Heat heat pump keeps much more of its heating power in the cold. A Hyper-Heat FX keeps 100% of its heating capacity down to -10°F and keeps running down to -22°F.
What size mini-split do I need for my room?
It depends on the room size, ceiling height, windows and the age of your home. Small bedrooms often need a 6,000 to 9,000 BTU unit and large living rooms 12,000 to 18,000. Use the calculator above, and we confirm with a load calculation at your free estimate.
Single-zone or multi-zone?
Single-zone means one outdoor unit per indoor unit. Multi-zone runs several indoor units from one outdoor unit. We usually give the master bedroom and main living spaces their own single-zone system for the best comfort, with other rooms on a multi-zone.
What's the difference between GX and FX indoor units?
The GX is compact and low-profile, great for bedrooms and smaller rooms. The FX has more airflow control for living rooms, kitchens and open spaces.
Should my outdoor unit go on a wall bracket or a ground stand?
If the unit can mount on a solid concrete or cinder block foundation, a wall bracket is ideal. If it would attach to siding or wood framing, we recommend a ground stand. Mini-splits make some noise and vibration as they cycle, especially during the defrost cycle in winter, and a ground stand keeps that from carrying into the house.
Should I repair or replace my old boiler, furnace or AC?
A common rule of thumb: multiply the system's age by the repair cost. If the answer is over $5,000, replacing usually makes more sense than repairing. Systems over 15 to 20 years old also tend to run less efficiently and need repairs more often. If you're facing a big repair, it's a good time to compare a Mitsubishi Electric Hyper-Heat system, and our free estimate can help you decide.
Are there rebates for heat pumps?
Whole-home systems may qualify for NYS Clean Heat rebates through your utility. We check eligibility and handle the paperwork.
What warranty comes with my system?
As a Mitsubishi Electric 12 & 12 dealer, the systems we install come with a 12-year parts warranty and a 12-year labor warranty. The labor warranty is subject to terms and conditions: TZ Electric maintains the system on a yearly or twice-a-year plan so we can confirm proper maintenance and operation, and the labor warranty is honored only through TZ Electric. Signing up for a TZ maintenance plan is what keeps it valid.