Radiant Panel Sizing

What size radiant panel goes into a room of a specific size?

See values below, but here are some ways to fine-tune results when sizing:

• For ceilings above 8 feet increase wattage by 25% for every additional 2 feet in height.

• If recommended wattage falls between two sizes, select the larger heater.

SIMPLIFIED SQUARE FOOTAGE COVERAGE FOR RADIANT PANELS IN SQ.FT
						Wt/Sq.ft
Panel (Watts)			BTU's			5	6	7	8	9	10
250W LAVA			853			50	42	36	31	28	25	square foot coverage
350W LAVA			1194			70	58	50	44	39	35
500W LAVA			1706			100	83	71	63	56	50
600W EMBER			2047			120	100	86	75	67	60
750W LAVA			2559			150	125	107	94	83	75
800W EMBER			2730			160	133	114	100	89	80
1000W LAVA			3412			200	167	143	125	111	100

 

 

SIMPLIFIED HEAT DEMAND FOR RADIANT PANELS IN WATTS
		Sq. feet                               Sq. feet                               Sq. feet                               Sq. feet                               Sq. feet                               Sq. feet                               Sq. feet
Room type	Wt/ Sq.ft	15	20	30	40	50	60	70	80	90	100	110	120	130	140	150	160	170	180	190	200	210
BASEMENT	5.11	77	102	153	204	255	307	358	409	460	511	562	613	664	715	766	818	869	920	971	1022	1073
WC	5.57	84	111	167	223	279	334	390	446	502	557	613	669	725	780	836	892	948	1003	1059
HALL	5.88	88	118	177	235	294	353	412	471	530	588	647	706	765	824	883	941	1000	1059
BEDROOM	6.19	93	124	186	248	310	372	434	495	557	619	681	743	805	867	929	991	1053
KITCHEN	6.81	102	136	204	273	341	409	477	545	613	681	749	818	886	954	1022	1090
HOBBY ROOM	7.12	107	142	214	285	356	427	499	570	641	712	783	855	926	997	1068
NURSERY	7.12	107	142	214	285	356	427	499	570	641	712	783	855	926	997	1068
DINING ROOM	7.43	111	149	223	297	372	446	520	595	669	743	818	892	966	1041
WORKING SPACE	7.43	111	149	223	297	372	446	520	595	669	743	818	892	966	1041
LIVING ROOM	8.00	120	160	240	320	400	480	560	640	720	800	880	960	1040
AVERAGE "9"	9.00	135	180	270	360	450	540	630	720	810	900	990	1080
BATHROOM	10.37	156	207	311	415	519	622	726	830	934	1037
These numbers are estimates, actual results may vary due to different types of construction, insulation levels, ceiling height, etc.