Name: 3.5 Ton Rheem 15.2 SEER2 R454B Central System RA14AY42AJ1NA, RH2TY4821STANNJ
Brand: Budget Heating
SKU: 26
Availability: InStock

3.5 Ton Rheem 15.2 SEER2 R454B Central System RA14AY42AJ1NA, RH2TY4821STANNJ

This 42,000 BTU Rheem Endeavor Line package marks the transition point in the RA14AY lineup: it is the first size to pair with the wider 21-inch RH2TY4821STANNJ air handler and its 3/4 HP ECM blower. The RA14AY42AJ1NA condenser holds a 15.2 SEER2 rating on low-GWP R-454B refrigerant under AHRI reference 215232971. Three and a half tons is the size that serves larger single-story homes and modest two-story houses that a 3 ton system leaves struggling on August afternoons.

Is a 3.5 Ton Refrigeration System the Right Size?

At 42,000 BTU per hour, a 3.5 ton system generally covers 1,800 to 2,100 square feet in a hot, humid climate. It is frequently the correct answer for four-bedroom single-story homes, homes with cathedral or tray ceilings that add conditioned volume without adding floor area, and houses with large unshaded glass on the south and west exposures.

This is also the point where duct capacity becomes the limiting factor more often than equipment capacity. The RH2TY4821STANNJ needs roughly 1,400 CFM to hit nominal, and a return system originally built for 3 tons will choke it. Before upsizing from 3 tons to 3.5, confirm that the return grille area, filter size, and trunk line can carry the additional airflow – otherwise the new system will run at higher static pressure and lose the efficiency you paid for.

Ideal for: Four-bedroom single-story homes, houses with vaulted or two-story great rooms, homes with large west-facing window walls, and small commercial suites.

Need more capacity? Step up to the 4 Ton Rheem 14.8 SEER2 R454B System RA14AY48AJ1NA, RH2TY4821STANNJ, which shares this same 21-inch air handler.

Recommended sizing ranges are general guidelines only. Actual system requirements depend on insulation, duct design, window area, ceiling height, occupancy, and local design conditions. Run our AC tonnage and BTU calculator, request free sizing assistance, contact Budget Heating, or call 813-885-7999.

What’s Included

Outdoor Condensing Unit	RA14AY42AJ1NA – 3.5 Ton Endeavor Line Classic Series Air Conditioner
Indoor Air Handler	RH2TY4821STANNJ Two-Stage Multiposition Air Handler
Application	Residential Split System, Cool Only with Field-Installed Electric Heat
Refrigerant	R-454B
Nominal Capacity	42,000 BTU / 3.5 Tons
Rated Efficiency	15.2 SEER2
Air Handler Cabinet Width	21 inches
AHRI Reference Number	215232971
Electrical	208-230V, Single Phase, 60 Hz

Plan the closet before the equipment arrives. Moving from the 17.5-inch cabinet used on 1.5 through 3 ton systems to this 21-inch chassis adds three and a half inches of width plus service clearance. On retrofits that often means widening a closet opening or reworking the supply plenum, and it is the single most common surprise on a 3 to 3.5 ton upsize.

Condensing Unit & Air Handler Features

RA14AY42AJ1NA Outdoor Condensing Unit

3.5 ton nominal capacity, 42,000 BTU, rated 15.2 SEER2
Highest efficiency tier available in the RA14AY family
Low-GWP R-454B refrigerant, roughly 78% lower GWP than legacy blends
7mm condenser copper coil for reduced charge and lighter cabinet
PlusOne Triple Service Access with 15-inch corner opening
Individual and two-fastener removable corner panels
Patented one-box PlusOne Refrigerant Detection System
Automatic outdoor unit shutdown on refrigerant detection
Composite base pan resists rust at the most failure-prone surface
10-year conditional parts warranty with Rheem registration

RH2TY4821STANNJ Air Handler

21-inch cabinet covering 3.5 and 4 ton applications
3/4 HP constant torque ECM blower motor
Two-stage airflow with multiple selectable speed taps
1.0 inch foil-faced insulation for quieter operation at higher CFM
All-aluminum coil with internally grooved tubing
Factory thermal expansion valve matched to R-454B
4-way convertible for upflow, downflow, and horizontal applications
Field-installed heater kits with UL and cUL compliant breakers
Rugged steel cabinet with under 2% leakage at 1-inch H2O
Integrated A2L sensor and mitigation board, no field kit required

Specifications & Manuals

RA14AY Technical Specifications Rheem Condenser Brochure RA14AY Submittal Sheet RH2TY Technical Specifications RH2TY Installation Instructions RH2TY Submittal Sheet Rheem Warranty Certificate

Product documentation includes condenser and air handler technical specifications, submittal data, installation instructions, and warranty information to assist with equipment selection, permitting, installation, and service.

Category	US	EU	UK	Chest (in)	Waist (in)	Hips (in)
Men	XS	44	34	32-34	26-28	33-35
	S	46	36	34-36	28-30	35-37
	M	48	38	38-40	32-34	39-41
	L	50	40	42-44	36-38	43-45
	XL	52	42	46-48	40-42	47-49
Women	XS	32	6	31-32	24-25	33-34
	S	34	8	33-34	26-27	35-36
	M	36	10	35-36	28-29	37-38
	L	38-40	12-14	37-39	30-32	39-41
	XL	42	16	40-42	33-35	42-44
Youth	XS	128	7	26-28	23-24	26-28
	S	134	8	28-30	24-25	28-30
	M	140	10	30-32	25-26	30-32
	L	146	12	32-34	26-27	32-34
	XL	152	14	34-36	27-28	34-36

Category	US	EU	UK	Waist (in)	Hip (in)	Inseam (in)
Men	28	44	28	28	34	30
	30	46	30	30	36	31
	32	48	32	32	38	32
	34	50	34	34	40	33
	36	52	36	36	42	34
Women	0	32	4	24	34	30
	2	34	6	25	35	30
	4	36	8	26	36	31
	6	38	10	27	38	32
	8	40	12	28	40	32

Category	US	EU	UK	Foot Length (in)
Men	6	39	5.5	9.25
	7	40	6.5	9.625
	8	41	7.5	10
	9	42	8.5	10.25
	10	43	9.5	10.625
	11	44	10.5	11
	12	45	11.5	11.25
	13	46	12.5	11.625
Women	5	35	2.5	8.5
	6	36	3.5	8.875
	7	37	4.5	9.25
	8	38	5.5	9.625
	9	39	6.5	10
	10	40	7.5	10.25
	11	41	8.5	10.625
	12	42	9.5	11
M (Unisex)	5	37	4.5	8.75
	6	38	5.5	9
	7	39	6.5	9.5
	8	40	7.5	10
	9	41	8.5	10.25
	10	42	9.5	10.625
	11	43	10.5	11
	12	44	11.5	11.25

3.5 Ton Rheem 15.2 SEER2 R454B Central System RA14AY42AJ1NA, RH2TY4821STANNJ