被动房和五恒系统有什么区别？
Passive House vs. "5-constant" systems — what's the difference?
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五恒是从设备层面解决舒适度和健康度问题，被动房是从建筑层面解决。建筑级的装修方案包含了设备级——当我们把建筑本身做好了，设备选择就变得很简单了。
"5-constant" systems solve comfort and health at the equipment level. Passive House solves it at the building level. Building-grade solutions encompass equipment — get the envelope right, and equipment decisions become simple.
被动房造价比普通装修贵多少？
How much more does Passive House cost vs. standard renovation?
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通常增量成本在 500~1000 元/平方，具体取决于建筑类型和气候区。考虑供暖制冷能耗节省约 70%左右，通常在 10~15 年内可收回增量成本。对于自住项目，体验价值往往是业主最终决策的主要因素，而不是回收期。
Typically 500–1000 RMB/m² premium depending on building type and climate. With around 70% savings in heating and cooling, the premium is usually recovered within 10–15 years. For owner-occupied homes, comfort experience is typically the deciding factor rather than payback period.
EPC 总承包是什么意思，你们做到哪一步？
What does EPC contracting mean? What exactly do you cover?
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EPC = 设计（Engineering）+ 采购（Procurement）+ 施工（Construction）总承包。巢象负责：前期能耗模拟 → 方案设计 → 施工图 → 材料采购 → 施工管理 → 气密性测试 → 验收交付，业主不需要对接多个分包，一个合同搞定全部。
EPC = Engineering + Procurement + Construction. ELE HOME handles: energy modeling → design → drawings → material sourcing → construction management → blower door testing → handover. One contract, one contact, start to finish.
南方气候（上海、广州）能做被动房吗？
Does Passive House work in hot-humid climates like Shanghai or Guangzhou?
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完全可以。PHI 已发布适用于各气候区的认证标准，包括炎热湿润气候。在南方，被动房的核心价值是隔热、防潮、过滤 PM2.5，夏季可大幅降低空调负荷。巢象在上海、广州均有已交付项目。
Yes. PHI has certified standards for all climate zones including hot-humid. In South China, the key benefits are heat rejection, moisture control, and PM2.5 filtration. ELE HOME has completed projects in both Shanghai and Guangzhou.
旧房改造能达到被动房标准吗？
Can an existing building be retrofitted to Passive House standard?
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可以做到 EnerPHit 标准（PHI 专为改造项目制定），气密性要求略低（n50 ≤ 1.0/h vs 新建 ≤ 0.6/h），其余指标基本相同。改造难点在于气密层连续性和结构热桥处理，这是巢象最核心的施工能力之一。
Yes, to EnerPHit standard — PHI's certification for retrofits. Airtightness target slightly relaxed (n50 ≤1.0/h vs ≤0.6/h new build). All other targets remain. The challenge is airtight layer continuity around existing structure — one of ELE HOME's core competencies.
如何开始合作？第一步做什么？
How do we start? What's the first step?
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联系我们后，先进行一次免费的项目初步咨询（约 1 小时），了解项目情况、气候区、预算范围，给出初步技术建议和概算造价。满意后签署设计合同，开始能耗模拟和施工图设计。
After you contact us, we start with a free 1-hour consultation — project overview, climate zone, budget. We provide a preliminary technical recommendation and cost estimate. If you're satisfied, we sign a design contract and begin energy modeling and construction drawings.
