McQuay PTAC Replacement Units
McQuay, now Daikin Applied, stopped building PTAC units in 2014. Many McQuay, Singer, and Remington units still run in older hotels, apartment towers, and senior housing across the Philadelphia area. When one fails, you replace it with a chassis built to the original McQuay sleeve size. No wall cutting. No new grille.
Call 800-866-1210 with the model number from the McQuay nameplate.
What happened to McQuay PTAC units
McQuay built PTAC and through-the-wall units for more than 50 years under the McQuay, Singer, Remington, and Climate Control names. In March 2014 the company ended the line. No new McQuay PTAC chassis have been built since.
Many of those units used sleeves that are not the 42 x 16 industry standard. A current GE Zoneline does not fit them. Your options come down to two paths:
- Replace the chassis only. Applied Comfort builds replacement chassis to the dimensions of discontinued McQuay series. The new unit slides into your existing sleeve and uses your existing grille. This is the lowest-disruption path for an occupied building.
- Replace the sleeve too. If the old sleeve is rusted through or you want to standardize on 42 x 16, the wall opening gets rebuilt. That means masonry work, new sleeves, and new grilles. It costs more and takes the room out of service longer.
In an occupied building, the chassis-only path is usually the practical choice. Air Distributors has supplied McQuay replacements since the line ended.
McQuay replacement at a glance
- Original brands
- McQuay, Singer, Remington, AAF
- Common series
- PNES, ENH, Series 16, PDAE, PMES, MEA, EA, PKES, MEK, K, PDHE, PMRS, RS, J
- Replacement chassis
- Applied Comfort, built to the original sleeve size
- Heat
- Electric heat, heat pump, or hydronic hot water coil, matched to your building
- 42 x 16 McQuay units
- Applied Comfort NA, NF, or NY series, or GE Zoneline where the heat type allows
Who replaces McQuay units
Older towers in Center City, University City, and the suburbs with original through-the-wall units on every floor.
Older full-service hotels that standardized on McQuay before the line ended and now replace failed units room by room.
Resident rooms where cutting the wall is not an option while the room is occupied.
Service companies who find a dead McQuay chassis and need a unit that fits the sleeve already in the wall.
Heat types: match what the building has
McQuay units came with three heat sources. The replacement needs to match yours, or your building's heating plan needs to change.
- Hydronic. A hot water coil inside the unit connects to the building's boiler loop. Common in older Philadelphia apartment buildings with central heat. Look for supply and return pipes connected to the unit, often with valves under the chassis. Applied Comfort builds hydronic replacements with the coil in the matching position, top or bottom.
- Electric heat. A resistance heater inside the unit. The nameplate lists heater kW.
- Heat pump. The compressor runs in reverse for heat, with electric backup. The nameplate or model number usually marks it.
Voltage, amperage, and controls
- Read the voltage from the McQuay nameplate: 208/230V or 265V. Some McQuay units run 265V and are hardwired, not plugged in.
- Note the circuit amperage or the breaker size. Electric heat output depends on it.
- Check for a remote wall thermostat. Some McQuay installations used a wall-mounted 24V thermostat instead of unit-mounted controls. Note it on your quote request so the replacement is set up for it.
- On hydronic units, note whether the building controls the boiler loop centrally, and whether the unit has a valve and what kind.
Wall sleeve and grille compatibility
McQuay sleeves come in several widths, including 42 and 44 inch sleeves, plus three-piece K series installations. The sleeve size, not the old unit, decides the replacement. Measure the inside of the sleeve: width, height, and depth.
Your existing outdoor grille stays in place when the replacement chassis is built to the original sleeve. If the grille is damaged, ask for a matching grille with your quote.
What to send for a McQuay replacement quote
- Full model number from the McQuay, Singer, or Remington nameplate, plus a photo of the plate
- Sleeve width, height, and depth in inches
- Voltage and amperage, and whether the unit plugs in or is hardwired
- Heat type: hydronic, electric heat, or heat pump. For hydronic, note top or bottom coil connections.
- Quantity, and how many units are still running versus failed
Shipping to Philadelphia
Replacement chassis ship from the Air Distributors warehouse in Louisville, Kentucky, or direct from Applied Comfort. Legacy chassis are often built to order, so plan lead time for multi-unit jobs. Ask for a phased delivery if you replace units over several months.
Request a McQuay Replacement QuoteNeed a replacement PTAC for a Philadelphia building?
Send the model number on your existing unit, the sleeve size, voltage, heat type, and quantity. You get a quote from a factory-authorized distributor, with units shipped from Louisville or direct from manufacturer stock.