OFFER ENDS OCTOBER 15, 2026 — FALL SLOTS FILLING FAST

Get $1,500 Back or 0% for 48 Months on a Mitsubishi Heat Pump for Two Rooms.

Stop paying oil, propane, or electric heating bills in the rooms you use most. Mitsubishi 2-zone heat pump installed this fall. Choose 0% for 48 months and a typical 2-zone system runs about $219/month — no interest, ever. Offer ends October 15, 2026.

🏆 Mitsubishi Diamond Elite · Top 1%📋 NH Master HVAC MBE0900309✅ 100% Satisfaction Guaranteed
Book My Free Estimate Free · No obligation · Takes about 60 minutes
Choose your perk at the estimate: $1,500 cash back or 0% APR for 48 months. Offer ends Oct 15.

Your Fall 2026 Perk Options — Choose One at Your Estimate

$1,500 Back

  • $1,500 applied directly to your invoice — reduces your total project cost
  • No rebate paperwork required — straight discount, not a mail-in
  • Stacks with NHSaves — we hand you the eligibility documents at install

0% for 48 Months

A typical 2-zone system runs about $219/month.

No interest, ever — 48 equal payments.

  • 0% APR through Synchrony — interest never accrues
  • Equal monthly payments over 4 years
  • No deferred interest trap
  • Apply at your free estimate — 60-second decision
  • Choose this perk or $1,500 cash back — whichever saves you more

Subject to credit approval
Apply at time of quote. Fast approval.

Why Our Installs Outperform the Industry Standard

Every Mitsubishi heat pump install involves 14 decisions the manufacturer does not control. Lineset grade. Pressure test. Vacuum depth. Wall penetration. Electrical. Custom Climates is a Diamond Elite Mitsubishi contractor — top 1% nationwide — and we choose better materials and stricter process on every one of those 14 decisions.

The difference shows up in 5 years. Leak-free linesets. Quiet mounts. Proper drainage. Equipment running at factory spec because it was installed to factory spec. That is the standard the other guys should be meeting. Most are not.

1

Top 1% of NH Contractors

Diamond Elite is earned on install quality and verified performance — only the top 1% of Mitsubishi contractors nationwide qualify.

2

Materials That Outlast Warranties

No refrigerant leaks from cheap copper. We use Isotech Premium Elastomeric linesets — Made in USA, 10-year warranty.

3

Process That Prevents Early Failure

No mystery leaks in year 3. We pressure-test every joint at double the industry standard before refrigerant goes in.

Book My Free Estimate

Pick either perk at your in-home estimate. No obligation.

None of these are upgrades you pay extra for. They are our standard on every install in southern New Hampshire. When a contractor bids your job cheaper, you now know exactly what they are skipping.

The 14 Decisions Your Installer Controls

14 installer-controlled decisions determine whether your system lasts 5 years or 20. Mitsubishi controls zero of them. Your installer controls all of them.

Materials Spec

Isotech linesets, Fortress line hide, RectorSeal pad, wall sleeves, steel wool sealant

Process Spec

600 PSI nitrogen test (2x industry standard) means leak-free refrigerant lines. 250-micron deep vacuum with 15-min decay test eliminates the moisture that destroys compressors. Wrench-verified torque on every fitting.

Book My Free Estimate

Join 91+ happy NH homeowners. Free, no obligation, about 60 minutes.

Mitsubishi has zero control over any of these choices. Ask any contractor bidding your job: what pressure do you test to? What vacuum level? What lineset brand? Most cannot answer. We publish our specs because the difference is provable — and because you deserve to know what you are buying.

How We Install vs. How Most NH Contractors Install

Feature What Most NH Installers Do Custom Climates
Pressure Testing 300-350 PSI (industry minimum)
Risk: micro-leaks cause refrigerant loss within 3-5 years		 600 PSI nitrogen test, documented ✅
Vacuum Evacuation 500 microns (industry standard)
Risk: trapped moisture silently corrodes the compressor		 250 microns deep vacuum + 15-min decay test ✅
Refrigerant Lineset Budget polyethylene, no warranty
Risk: UV degradation and cracking within 5-7 years		 Isotech Premium Elastomeric, Made in USA, 10-yr warranty ✅
Wall Penetration Open hole or foam only
Risk: air, water, and pests enter the home year one		 Wall sleeve + steel wool + sealant compound ✅
System Design Square footage estimate
Risk: undersized or oversized system, comfort problems, and warranty issues		 Room-by-room load calc + full pre-install walkthrough ✅

A system that passes inspection and a system built to last are not the same thing.


Real Installs. Real Homes. Southern NH.

Every system gets the same nitrogen test, the same deep vacuum, and the same materials spec. Whether it is one zone or four. These are southern NH homes — your neighbor may have had one of these installs already.


Two-zone Mitsubishi Hyper Heat system installed in Merrimack, NH
Two-zone Hyper Heat system in Merrimack, NH — keeps heating down to -22°F, so the oil burner stays off through the coldest weeks.

Single-zone Mitsubishi mini split heating a home addition in Concord, NH
Single-zone mini split in a Concord, NH home addition — a room that used to be closed off all winter is now warm year-round.

Single-zone Mitsubishi heat pump install in Franklin, NH
Single-zone Mitsubishi install in Franklin, NH — this homeowner heats this room for a fraction of last winter’s oil bill.


 


Mitsubishi 12-Year Parts Warranty · Licensed Master HVAC NH MBE0900309 · 100% Satisfaction Guaranteed

Prefer to call? (603) 262-1623 — Mon–Sat 7AM–6PM

What NH Homeowners Say

⭐⭐⭐⭐⭐ 4.7 out of 5 · 91+ Google Reviews
⭐⭐⭐⭐⭐

“The mini-splits were installed within 2 weeks of signing. Each member, from sales to final installation, was professional, courteous, an expert at their role — the result was a neat, clean appearance inside and out.”

Donna · Nashua, NH

⭐⭐⭐⭐⭐

“We had 5 quotes and while this was a tad more expensive, this team had the most expertise. You get what you pay for! No shortcuts, extremely professional, thorough, very clean.”

Jessica · Merrimack, NH

⭐⭐⭐⭐⭐

“Steve presented options without any pressure, Nick coordinated the installation while keeping me informed throughout. All the guys were polite, courteous, cleaned up after themselves.”

Brian · Concord, NH

⭐⭐⭐⭐⭐

“From beginning to end our experience could not have been better. Steve was extremely knowledgeable, and Nick and his crew were polite, professional, and explained the system thoroughly.”

Larry · Manchester, NH

⭐⭐⭐⭐⭐

“Straight forward and very knowledgeable. The written proposal was timely and within a short time we were scheduled for install. The field team were professional, extremely neat.”

Gene · Epsom, NH

⭐⭐⭐⭐⭐

“Our boiler died on a Tuesday and Custom Climates accommodated us with a new one two days later. Not pushy with the estimate — courteous, professional manner.”

Frank · Londonderry, NH


Questions Homeowners Ask Before Booking

You schedule a free in-home estimate. We assess your home, confirm it meets the 2-zone parameters, and recommend the right system. If you decide to move forward, you choose: $1,500 instant cash back applied to your installation, or 0% APR for 48 months through Synchrony Bank (subject to credit approval). One perk per household.

A technician visits your home, measures the rooms, checks your electrical panel, evaluates the lineset path, and recommends the right system configuration. You get a written estimate. No obligation, no pressure. Takes about 60 minutes.

The Standard outdoor unit heats efficiently to about 5°F. The Hyper Heat unit heats to -22°F, which makes it the right choice for most New Hampshire homes. We recommend the best option based on your location and home during the estimate. Both systems qualify for the fall perk offer.

Custom Climates provides all documentation and information you need to file for NHSaves rebates yourself. We do not file paperwork or guarantee amounts. Rebate amounts vary by system, utility provider, and program terms.

The fall perk offer ends October 15, 2026. After that date, we continue installing Mitsubishi heat pumps, but the $1,500 cash back and 0% APR for 48 months are gone — both of them. The free in-home estimate is how you lock in eligibility. It takes about 60 minutes and there is no obligation. Call (603) 262-1623 or use the booking button on this page.


Offer ends October 15, 2026 — October install slots fill first.

⚡ Offer Ends October 15, 2026

Don’t Wait Until Winter Prices Hit

Fall install slots are filling. Lock in $1,500 back or 0% for 48 months before Oct 15.

or call (603) 262-1623 · Mon–Sat 7AM–6PM

🔒 No spam. No obligation. 60-minute visit. We call you within 15 minutes during business hours (Mon–Sat 7AM–6PM).


*0% APR for 48 months on approved credit through Synchrony Bank. Standard APR applies after promotional period. Subject to credit approval. Minimum monthly payments required. $1,500 cash back offer applies to qualifying 2-zone Mitsubishi heat pump systems installed between August 15 and October 15, 2026. One perk per household: either $1,500 cash back OR 0% APR for 48 months, not both. Package assumes 50 ft or less combined lineset and 50 ft or less electrical run from existing panel. Additional charges apply for longer runs, additional zones, or non-standard installations. Monthly payment example based on a $10,500 installed system financed at 0% APR for 48 months ($10,500 ÷ 48 = $218.75); your quote may vary.



(603) 262-1623 · Mon–Sat 7AM–6PM

2049 Dover Rd, Epsom, NH 03234 · NH Master HVAC License MBE0900309

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