DXTH12(C,E)426A-20 – MINISPLIT HEAT PUMP SYSTEM (1 TON, 240V, 20 SEER2)

A mini-split heat pump provides cooling and heating for a single room without ductwork. This 12,000 BTU (1-ton) Daizuki unit handles rooms up to ~550 sq ft at 20 SEER2 efficiency. WiFi control included. Blue Fin coil coating protects against corrosion.

Specs: 12,000 BTU, 240V, 20 SEER2, heat pump, WiFi, Blue Fin coating, indoor and outdoor units included

Replaces: DXTH12C426A-20, DXTH12E426A-20, DXTH12X426A-20

Fits: Single-zone rooms up to ~550 sq ft. Requires professional installation with line set (sold separately).

In stock at Open To Public HVAC Parts in Dallas. We test parts at the counter before you buy. Call or text (214) 340-9421.

Specs

• TypeHeat pump condenser
• Nominal capacity1 ton
• Efficiency20 SEER
• Voltage240V
• SoldAt the counter for pickup - we do not ship
• SizingAsk for the AHRI certified match number, not just the tonnage

Cross-reference numbers

This part replaces the following OEM and aftermarket numbers:

• DXTH12C426A-20
• DXTH12E426A-20
• DXTH12X426A-20

Not sure if your number matches? Call (214) 340-9421 or bring the old part in — bench-testing is free.

Do you sell complete systems to homeowners?

Yes. We are open to the public and there is no contractor licence required to buy equipment from us. Installing it is a different question - gas, refrigerant and electrical work carry real code and safety requirements.

Can I install this myself?

In Texas the homeowner exemption lets you work on your OWN home. It explicitly does not extend to a friend or a handyman doing it for you. Refrigerant work also requires EPA certification to purchase and handle refrigerant.

How do I know what size I need?

Do not just match what is there - the old unit may have been wrong from the start. Sizing follows from a load calculation on the house, not from square footage rules of thumb, and an oversized system short-cycles and never pulls humidity out.

What is an AHRI match and why does it matter?

The certified performance of the condenser, coil and air handler working together as a set. A condenser is only half a system, and the rating on the box assumes a specific match. Ask for the AHRI certified match number on any quote.

Do you deliver?

Everything is sold at the counter for pickup - we do not ship and we do not sell online. 10226 Plano Rd, Suite 104 in Dallas.

Can you help me work out what I need?

Bring the model number off the existing equipment and photos of the installation. We will work through it with you at the counter.