{"product_id":"riga-piston-replacement-piston","title":"Riga Replacement Piston for Automatic Window Opener","description":"\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e This is a \u003cstrong\u003ereplacement piston only\u003c\/strong\u003e — it is not a complete automatic window opener. It is designed to replace a failed or worn piston inside an existing Riga Automatic Window Opener. If your opener housing and arm are intact but the opener no longer extends or retracts properly, replacing the piston may restore full function at a fraction of the cost of a complete opener replacement.\u003c\/p\u003e\n\u003cp\u003eIf you need a complete automatic window opener (including housing, arm, and piston), see the \u003ca href=\"\/products\/riga-automatic-window-opener\"\u003eRiga Automatic Window Opener ($119)\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eReplacement piston (internal cylinder component)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible With\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRiga Automatic Window Opener — all Riga greenhouse models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eComplete Opener?\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo — piston only; does not include housing or arm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRIGA-PISTON\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePrice\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e$44 per piston\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003ePiston vs. Complete Opener — Which Do You Need?\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSituation\u003c\/th\u003e\n\u003cth\u003eWhat to Order\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOpener housing and arm are intact; piston no longer extends or retracts\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis piston ($44)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e$44\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOpener housing is cracked, broken, or missing\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/riga-automatic-window-opener\"\u003eComplete Opener\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e$119\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eArm or quick-release mechanism is damaged\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/riga-automatic-window-opener\"\u003eComplete Opener\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e$119\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdding ventilation to a roof window that has no opener\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/riga-automatic-window-opener\"\u003eComplete Opener\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e$119\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOpener opens but doesn’t open wide enough (heavy window)\u003c\/td\u003e\n\u003ctd\u003e\n\u003ca href=\"\/products\/riga-automatic-window-opener\"\u003eComplete Opener\u003c\/a\u003e (add second unit)\u003c\/td\u003e\n\u003ctd\u003e$119\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eHow the Piston Works Inside the Opener\u003c\/h3\u003e\n\u003cp\u003eThe Riga Automatic Window Opener uses a sealed piston filled with paraffin (wax) oil. As the greenhouse interior temperature rises above approximately 72°F (22°C), the paraffin expands and pushes the piston outward, which in turn pushes the roof window open. As the temperature drops, the paraffin contracts and the piston retracts, allowing the window to close. Over time, the paraffin can degrade or the piston seals can wear, causing the opener to lose extension force or fail to retract. Replacing the piston restores the original opening performance without replacing the entire opener assembly.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I know if I need a replacement piston or a complete opener?\u003c\/strong\u003e\u003cbr\u003eIf the opener housing (the outer cylinder body) and the arm\/quick-release mechanism are physically intact and undamaged, a replacement piston is likely all you need. If the housing is cracked, the arm is bent or broken, or the quick-release mechanism is damaged, order the complete opener instead. If you are unsure, contact us with a photo of your existing opener and we can advise.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this piston compatible with all Riga greenhouse models?\u003c\/strong\u003e\u003cbr\u003eYes — this replacement piston is compatible with the Riga Automatic Window Opener used across all Riga greenhouse models, including the IIs, IIIs, III, IVs, IV, V, XL 6, and XL 9.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I install the replacement piston myself?\u003c\/strong\u003e\u003cbr\u003eYes — the piston is a user-replaceable component. Contact us for installation guidance specific to your opener model if needed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMy opener no longer opens the window at all — is the piston the problem?\u003c\/strong\u003e\u003cbr\u003eA failed piston is a common cause of an opener that no longer extends. However, if the opener was exposed to freezing temperatures while extended, the housing may have cracked instead. Inspect the housing for visible cracks before ordering a piston. If the housing is intact, a replacement piston is the likely fix.\u003c\/p\u003e","brand":"Exaco","offers":[{"title":"Default Title","offer_id":59517636542750,"sku":"RIGA-PISTON","price":44.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1078\/1802\/5246\/files\/riga_ventilation.jpg?v=1782510512","url":"https:\/\/rigagreenhousekit.com\/products\/riga-piston-replacement-piston","provider":"Riga Greenhouses","version":"1.0","type":"link"}