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  1. Daikin LT ASHP: Optimising Settings for DHW (3 replies)
  2. Sizing an Air to Water (5 replies)
  3. Altherma bivalent (7 replies)
  4. Daikin Altherma Pump Down? (6 replies)
  5. feedback on Daikin altherma HT please (9 replies)
  6. Converting a Mitsi inverter to a water heater. Help please (9 replies)
  7. converted a dehumidifier 2 a heatpump (0 replies)
  8. Heat pump design (0 replies)
  9. Zubadan heat pum advice needed. (3 replies)
  10. Air Source Heat Pump x Water-Water Heat Pump (chiller based) - which is better? (5 replies)
  11. Senville mini split tubing orientation (0 replies)
  12. Heat Pump (1 replies)
  13. Carrier 30 HZV 195 (3 replies)
  14. Can be mixed Sanyo GHP with ECOi?Oil for first is HP-9 and for the second is FV68S. (4 replies)
  15. Daikin ALTHERMA HT: Can inside unit be placed outside? (1 replies)
  16. ASHP. We've only gone and done it again! (8 replies)
  17. Most efficient heat pump vc. geothermal (3 replies)
  18. Frost on suction line (7 replies)
  19. Can I use a recovery unit to charge a split 410a heat pump? (2 replies)
  20. Ihs & idm (3 replies)
  21. Heat pump good-practice guide (1 replies)
  22. required technical support for mitsubishi heavy industrial heat pump (1 replies)
  23. PID and PLCs (4 replies)
  24. Confusion with two proposed systems (17 replies)
  25. Commissioning Sheets for Splits? (16 replies)
  26. Using same suppy for 2 A/C Systems (8 replies)
  27. bivalent systems (5 replies)
  28. Daikin Altherma HT - hot water once or twice a day? (4 replies)
  29. 3 way mix valves (12 replies)
  30. Is my refrigerant level OK? (3 replies)
  31. Carrier 2 1/2 Ton Air to Air HP performance. (3 replies)
  32. Daikin ASHP: Optimising Setting (2 replies)
  33. Heat pump controller (2 replies)
  34. Toshiba A/C (7 replies)
  35. Earth Save Products (1 replies)
  36. Fujitsu Manuals (3 replies)
  37. Legionella and A/C Equipment. (8 replies)
  38. Heat pump refrigerant circuit - bypass filter drier and liquid receiver in defrost (11 replies)
  39. Mitsubishi Zuba Cental (1 replies)
  40. AIR Source heat pump calculator. (22 replies)
  41. Which is the best Air to water ASHP currently available? (35 replies)
  42. Solar panel power consumption (2 replies)
  43. Daikin heat pump advise needed. (14 replies)
  44. COP Monitors (5 replies)
  45. NIBE 3 Port Valves (0 replies)
  46. Daikin Altherma HT - Mounted on floor or wall (2 replies)
  47. Daikin Altherma HT - Theft protection (16 replies)
  48. help needed (10 replies)
  49. Colt Caloris (2 replies)
  50. Electricity monitor for Daikin Altherma HT (11 replies)
  51. Calorex Variheat Unit - 8 years of problems; Please help! (11 replies)
  52. Air to water hitachi heat pump (0 replies)
  53. MCS Certification (5 replies)
  54. A1 or E1 (4 replies)
  55. Inhibitor (23 replies)
  56. Air source heat pump issue! Need help. (19 replies)
  57. 410a heat pump trouble shooting (18 replies)
  58. What is the correct method to determine COP? (9 replies)
  59. Shinco heat pumps (10 replies)
  60. Buffers and ASHPs.............again (0 replies)
  61. ASHP hot water tank size (3 replies)
  62. Daikin Altherma HT quote advice (21 replies)
  63. Daikin Altherma Hydro-box Pump (6 replies)
  64. Altherma Flow Temp Issue Updated (1 replies)
  65. Defrost efficiency (2 replies)
  66. IDM Heat Pump Issue (3 replies)
  67. Using setback with heat pumps (7 replies)
  68. Fujitsu AWOY 14LS AZ Indoor wall unit. (4 replies)
  69. how to size swimming pool heat pump? (14 replies)
  70. Buffer Tank Assisted Defrost (138 replies)
  71. Purmo Low Temp Rad Report (1 replies)
  72. Air source heat pump for radiators (8 replies)
  73. Panasonic Aquarea in combination with Rotex hybridcube? (0 replies)
  74. Which ASHP model / brand to go with... (6 replies)
  75. subcool 6 degree (6 replies)
  76. required technical support of mitsubishi wall mounted heat pump (2 replies)
  77. Hot Gas Defrost design (0 replies)
  78. Altherma Combination Valve (1 replies)
  79. anyone in N Scotland (1 replies)
  80. calorex heat pump(r134a converting to R22 ) (6 replies)
  81. Panasonic Aquarea's (18 replies)
  82. RHOSS EXP TXAEY intermittent hp fault (5 replies)
  83. Hitachi EcoCute DHW ASHP or better CoP (3 replies)
  84. Heat pump radiator sizing 50% larger is enough - fact of fiction (17 replies)
  85. scroll vs rotary (3 replies)
  86. what heat pump for cold winter? (7 replies)
  87. Some basic info please (17 replies)
  88. How many starts can an inverter Heat Pump have (7 replies)
  89. blue diamond pumps (3 replies)
  90. Heat Pump Theory (20 replies)
  91. My first self made EVAP (128 replies)
  92. Digital Scrolls (14 replies)
  93. Moisture in POE-oils vs.other installation alternatives (26 replies)
  94. New UK Standards (0 replies)
  95. Overlay UFH with Heat Pumps (1 replies)
  96. Frequent compressor cycling when using a ASHP for shower water heating alone (84 replies)
  97. Daikin VRV II retrofitting water heat recovery and solar (21 replies)
  98. Brian_UK (2 replies)
  99. Heat Pump Reversing Valve (29 replies)
  100. ASHP do you need to apply to electricity supplier for increased load? (4 replies)
  101. Scrapped Daikin 410a Inverter split as not cost effective to replace compressor (2 replies)
  102. Fujitsu error codes ASTA series (0 replies)
  103. Fujitsu multi systems. noises (11 replies)
  104. Multiple Reversing Valve Failures (0 replies)
  105. Daikin Help Please (3 replies)
  106. DIY cell phone remote control for Mitsi MSZ-FD25 (9 replies)
  107. Daikin Altherma question (4 replies)
  108. Ventilation courses (2 replies)
  109. Altherma HT ASHP - power consumption whilst idle (5 replies)
  110. Calorex AW910ALX Heat Pump Cable question (4 replies)
  111. Air Source Heat Pump Buffer Vessel Sizing (62 replies)
  112. HIGH COP Heat Pump (16 replies)
  113. Swimming pool HP c/w house GSHP (2 replies)
  114. Keram Heat Pumps (0 replies)
  115. Remote Thermostat (5 replies)
  116. Daikin altherma bottom plate heater (3 replies)
  117. Carel uPC with Smart HP application (0 replies)
  118. ASHP DIY Install (2 replies)
  119. Pool heat pump set up help please. retired eng. (8 replies)
  120. Love in a cold climate (7 replies)
  121. BBC: Danfoss refund for Air-Source HeatPump System poor run costs (16 replies)
  122. Flow rate through low loss header (14 replies)
  123. Calorex swimming pool heat pump (2 replies)
  124. ASHP + Maritime Location (3 replies)
  125. bryant home heat pump (6 replies)
  126. 12k wall mount heat pump issue (20 replies)
  127. Heat Pump Cascades and buffers (2 replies)
  128. Heat pump testing issues (2 replies)
  129. Heat pump water heater with head pressure control?!? What the heck? (2 replies)
  130. Mitsubishi heat pump line routing (1 replies)
  131. problem for Mitsubishi compact ceiling cassette (5 replies)
  132. Heat pump defrost cycle and startup/shutdown sequence (1 replies)
  133. Mitsubishi WR2 heatpump COP issue (19 replies)
  134. Comined AAHP and AWHP (0 replies)
  135. Frosting (2 replies)
  136. Revised Mitsubishi Figures (8 replies)
  137. help (5 replies)
  138. Heat pump for cooling. (4 replies)
  139. Your Opinion on Daikin 4MX 4 port ducltess split heat pump (0 replies)
  140. General Rad/UFH Questions in conjunction with Heat Pumps (12 replies)
  141. Polypropylene piping (8 replies)
  142. Setting a Honeywell CM900 to control Mitsi ASHP (4 replies)
  143. heat pump enclosures (3 replies)
  144. General HP Questions (34 replies)
  145. Austrian Heat Pump Contacts (5 replies)
  146. HELP! I need an absorption AC system (5 replies)
  147. Pool AWHP's (13 replies)
  148. MCS Registration (1 replies)
  149. Looking for a cO2 heatpump for the Netherlands (12 replies)
  150. Mitsubishi plus back up heaters (4 replies)
  151. Altherma flow temp issue (67 replies)
  152. Brazed Plate HX sizing help (2 replies)
  153. ROTEX HPSU / DAIKIN ALTHERMA 11kW "ERROR U2" (3 replies)
  154. Altherma or Aquarea (3 replies)
  155. Danfoss Thermostatic Expansion Valve (0 replies)
  156. sanyo GHP (SGP-E240) (1 replies)
  157. Legionella (7 replies)
  158. Mitsubishi Ecodan heatpump and gledhill boilermate hp dem (10 replies)
  159. Problems with Air Source Heat Pump (7 replies)
  160. Copeland Scroll in reversable heat pump (4 replies)
  161. Daikin Altherma - Defrost Cycles to frequent (35 replies)
  162. Another heat pump getting a bad name... good read... NIBE Fighter 360p (7 replies)
  163. Central France Limoges (0 replies)
  164. Professor in LG-ologi wanted !!! (11 replies)
  165. Calorex heat pump issues... A juicy read... (43 replies)
  166. Help with technical diagnosis of heat pump problem (7 replies)
  167. mitsubishi heavy industry problem (1 replies)
  168. Strange behaviour of heat pump air conditioner (12 replies)
  169. Change air condenser coils with geo (0 replies)
  170. Evap fin spacing and freezeup (76 replies)
  171. Latest Altherma simulator (21 replies)
  172. Heat Pump with Strange Laboring Sounds (10 replies)
  173. altherma/ecodan (4 replies)
  174. Help setting up 2 Daikin Altherma heat pumps (5 replies)
  175. Mitsubishi Compressor Pre-Heat requirement? (17 replies)
  176. Mitsubishi Ecodans ASHP issues... (158 replies)
  177. Is my Heat pump system OK? (12 replies)
  178. Home made swimming pool heat pump (129 replies)
  179. Altherma Heat Pumps Setting up (24 replies)
  180. Trane Comfortlink controls (0 replies)
  181. is air source good chose for heating in NYC (6 replies)
  182. Can anyone give advice about heat pump quandry? (5 replies)
  183. Evap sizing tools (70 replies)
  184. Covering Altherma Outdoor Unit (3 replies)
  185. Daikin pricing in australia (0 replies)
  186. Problems with LG split heat pump M/N LS902hpv (5 replies)
  187. ASHP heating flow temperature (21 replies)
  188. Please help (3 replies)
  189. Reversing Valve fault (3 replies)
  190. Queries regarding heat pump. (4 replies)
  191. E04 fault code on fan coil unit (4 replies)
  192. How to make residential scroll compressor into VFD compressor (1 replies)
  193. Mitsubishi Ecodan Control Question (12 replies)
  194. Zubadan missing power (12 replies)
  195. Altherma ASHP, heating but no cooling? (4 replies)
  196. Altherma defrost algorithm (3 replies)
  197. Daikin multi split controls (13 replies)
  198. Daikin Siesta condensor ( loud high frequency inverter noise ) (3 replies)
  199. Is everyone aware Fuj wallmounts now less powerful? (7 replies)
  200. rooftop package unit helpfind supplier (7 replies)
  201. Aeromax plus (1 replies)
  202. Fujitsu indoor unit removal (7 replies)
  203. Calculating the capacity of a heat pump (3 replies)
  204. Blinking light on defrost board (0 replies)
  205. Altherma Optimal Peformance Setting (18 replies)
  206. R22 to R438a conversionfor heatpumps (2 replies)
  207. rack-mounted cooler system for computers (3 replies)
  208. 1984 Trane Weathertron Manual (1 replies)
  209. Altherma Error Code A6 (4 replies)
  210. Altherma & Dimplex Smartrad (5 replies)
  211. Mixing indoor and outdoor units from different manufacturers (3 replies)
  212. Climexel HH 102 M (2 replies)
  213. Swimming Pool Heat Pump (14 replies)
  214. Heat pumps 'need tighter regulations' (9 replies)
  215. General Inverter (Air con unit not blowing hot) (2 replies)
  216. Water chilling/heating (4 replies)
  217. sizing of air-towater heat pump (9 replies)
  218. high current on start winding while running (13 replies)
  219. Hot Water Single or Multi Pass? (5 replies)
  220. Altherma Cooling Performance? (0 replies)
  221. heat pump refrigerant line sizing (1 replies)
  222. Diagnosing Daikin problem (3 replies)
  223. mitsubishi ge80 problems (1 replies)
  224. Amcoraire split air 1200 BTU AOS121HX (1 replies)
  225. Exhaust Air to Warm water Heat Pump - malt kilning (167 replies)
  226. Air to Air heat pump Planning Permission (0 replies)
  227. Mountie75 (0 replies)
  228. TXV/Check Valve Stuck Open (4 replies)
  229. Sanyo VRV (2 replies)
  230. Remote Thermostat. (2 replies)
  231. mr slim indoor unit problems (8 replies)
  232. AG 150 and Pc ip32 (0 replies)
  233. fujitsu fault codes (5 replies)
  234. Daikin Super Inverter Questions - New Controller, Zoning and Fan Control (4 replies)
  235. pumping down a system (1 replies)
  236. high head pressure (0 replies)
  237. reversing valve trane (3 replies)
  238. Grunaire Mini-split (10 replies)
  239. Cold room insulation (2 replies)
  240. Help! Daikin Altherma HT interior unit compressor noise (9 replies)
  241. Haier HSU 12HF03 Temperature Problem (5 replies)
  242. Fujitsu AST18LSBCW error codes (9 replies)
  243. Callling everyone with Altherma experience (2 replies)
  244. Advice On Cylinder For Ecodan (10 replies)
  245. Ecodan FTC Electrical Wiring (9 replies)
  246. Defrost thermostat puzzle (1 replies)
  247. APAC flow balancer? (0 replies)
  248. thermostat (2 replies)
  249. Fujitsu Heating Problem (4 replies)
  250. help on home made heat pump (5 replies)